Post your C/C++ Programs Here

[Gigacore]

Hi guys n gals,

If you are a good at C/C++ Programming or if you are a programmer or just know this language then post you Programs here. By this way it helps learners a lot. Members can post their programs and get suggestions if there is anything wrong it......

Use this Pattern:

A Program to find the largest of three numbers using nested if

#include <stdio.h>
main()
{    
    int    a,b,c,big;
    printf("Enter Three numbers");
    scanf("%d%d%d",&a,&b,&c);
    if(a>b)
        if(a>c)
            big=a;
        else
            big=c;
    else
        if(b>c)
            big=b;
        else
            big=c;
    printf("Largest of %d,%d and %d = %d",a,b,c,big);
return 0;
}

==================================================
List of all the C Programs posted in this thread..
==================================================

● A Program to find the largest of three numbers using nested if.
● A program to findcalc area, surface area, volume, total surface area etc. of numerous 2D and 3D figures using functions.
● A Program to perform basic calculations.
● Program To Reverse a Number
● What is this?
● A Program that Binary, Decimal, Octal Inter-Conversions
● A bulls and cows game
● A program that selects a number which is of 4 digits and all are unique numbers.
● Write a C Program to sort numbers of an Array using Bubble Sort Method.
● Reusable java class to send email through pop3
● Simple Switch-Case Example.
● Swapping of two numbers without a Temporary variable in 1 line.
● A program that creates a vB list out of a file given in a particular format.
● Digit Forum URL Bulleted List Generator
● Write a C program to find an element from an Array using Binary Search Method.
● TOWER OF HANOI Simulator
● A Simple C Program to read and print a one-dimensional array
● C Program to find the largest element in an array and the position of its occurrence.
● A C program to find the maximum and minimum elements in an array having N elements
● Program which compares two strings, concatenate them and then gives the length of string.
● Program to kill a software /demo version expire in C
● Program To arrange numbers in Pyramid Pattern
● Program: a simple shop using string, integers, float, & algebraic operators
● Character Eater
● Program to insert a node in a single linked list.
● A C Program to convert decimal number to its Binary Number Equivalent
● Introduction to C++ - Stanford Video Tutorials and Other Lectures (Not a program)
● A Program to remind that u r using other account
● Typedef Example Program
● A C Program to check whether a given word is Palindrome or not.
● A Simple C Program to Display the number and its square from 1 to 10 using register variable.
● A C Program to find the sum of two matrix using two dimensional array.
● TURBO CALC 15000
● A Command Line Calculator.
● Function 2 input a matrix
● Read an int & an int array & search for that int in the int array & return its position.
● Python version of the above program.
● Program to perform operations on a binary search tree.
● Program to calculate the computer sales man salary. (Correction)
● Basic Inventory tracker software program code.
● Sudoku
● Simple DOS Text-based alien shooter game
● A program for unit conversions.

===========================================
Last Update: 12 August 2008
--------------------------------------------------------

Some good free C/C++ Compilers

● Relo
● Bloodshed Dev C++
● GCC
● Borland C++ 5.5
● MinGW
● Open Watcom

[xbonez]

here's a prog to calc area, surface area, volume, total surface area etc. of numerous 2D and 3D figures using functions

i had made this one for a friend - it was his project

#include<iostream.h>
#include<conio.h>
#include<math.h>

void line(void);
void cuboid(void);
void cube(void);
void cylinder(void);
void cone(void);
void sphere(void);
void hemisphere(void);
void triangle(void);
void rectangle(void);
void square(void);
void circle(void);
void parallelogram(void);

void main()
{
	clrscr();
	int o1,o2;

	menu:
	do{
		clrscr();
		cout<<"\n\n1. 3-D Figures"
		    <<"\n\n2. Plane Figures"
		    <<"\n\n3. Exit"
		    <<"\n\nEnter your choice -->\t";
		cin>>o1;

		switch(o1)
		{
			case 1:         clrscr();
					cout<<"\n\n";
					line();
					cout<<"\n\t\t\t\t3-D Figures\n\n";
					line();
					cout<<"\n\n1. Cuboid"
					    <<"\n\n2. Cube"
					    <<"\n\n3. Cylinder"
					    <<"\n\n4. Cone"
					    <<"\n\n5. Sphere"
					    <<"\n\n6. Hemisphere"
					    <<"\n\n7. Main Menu"
					    <<"\n\nEnter your choice -->\t";
					    cin>>o2;

					    switch(o2)
					    {
						case 1:		clrscr();
								cout<<"\n\n";
								line();
								cout<<"\n\t\t\t\tCuboid\n\n";
								line();
								cuboid();
								getch();
								break;

						case 2:		clrscr();
								cout<<"\n\n";
								line();
								cout<<"\n\t\t\t\tCube\n\n";
								line();
								cube();
								getch();
								break;

						case 3:		clrscr();
								cout<<"\n\n";
								line();
								cout<<"\n\t\t\t\tCylinder\n\n";
								line();
								cylinder();
								getch();
								break;

						case 4:		clrscr();
								cout<<"\n\n";
								line();
								cout<<"\n\t\t\t\tCone\n\n";
								line();
								cone();
								getch();
								break;

						case 5:		clrscr();
								cout<<"\n\n";
								line();
								cout<<"\n\t\t\t\tSphere\n\n";
								line();
								sphere();
								getch();
								break;

						case 6:		clrscr();
								cout<<"\n\n";
								line();
								cout<<"\n\t\t\t\tHemisphere\n\n";
								line();
								hemisphere();
								getch();
								break;

						case 7:		goto menu;


						default:	cout<<"\n\nInvalid Input\a\a\a";
								goto menu;
					    }
					    getch();
					    break;

			case 2:		    clrscr();
					    cout<<"\n\n";
					    line();
					    cout<<"\n\t\t\t\tPlane Figures\n\n";
					    line();
					    cout<<"\n\n1. Traingle"
						<<"\n\n2. Rectangle"
						<<"\n\n3. Sqaure"
						<<"\n\n4. Circle"
						<<"\n\n5. Parallelogram"
						<<"\n\n6. Main Menu"
						<<"\n\nEnter your choice -->\t";
					    cin>>o2;

					    switch(o2)
					    {
							case 1:		clrscr();
									cout<<"\n\n";
									line();
									cout<<"\n\t\t\t\tTraingle\n\n";
									line();
									triangle();
									getch();
									break;

							case 2:		clrscr();
									cout<<"\n\n";
									line();
									cout<<"\n\t\t\t\tRectangle\n\n";
									line();
									rectangle();
									getch();
									break;

							case 3:        	clrscr();
									cout<<"\n\n";
									line();
									cout<<"\n\t\t\t\tSquare\n\n";
									line();
									square();
									getch();
									break;

							case 4:		clrscr();
									cout<<"\n\n";
									line();
									cout<<"\n\t\t\t\tCircle\n\n";
									line();
									circle();
									getch();
									break;

							case 5:		clrscr();
									cout<<"\n\n";
									line();
									cout<<"\n\t\t\t\tParallelogram\n\n";
									line();
									parallelogram();
									getch();
									break;

							case 6:		goto menu;


							default:	cout<<"\n\nInvalid Input\a\a\a";
									goto menu;
					    }

					    getch();
					    break;

			case 3:             cout<<"\n\nPress any key to exit...\a";
					    getch();
					    break;

			default:	    cout<<"\n\nInvalid Input\a\a\a\a";
					    goto menu;



		}

	}while(o1!=3);

}


void line()
{
	int i;
	for (i=0;i<80;i++)
		cout<<"*";
}

void cuboid()
{
	float l,b,h,a,v;
	cout<<"\n\nEnter length of cuboid -->\t";
	cin>>l;
	cout<<"\n\nEnter breadth of cuboid -->\t";
	cin>>b;
	cout<<"\n\nEnter height of cuboid -->\t";
	cin>>h;
	v=l*b*h;
	a=2*(l*b+b*h+l*h);
	cout<<"\n\nVolume of cuboid is "<<v;
	cout<<"\n\nSurface area of cuboid is "<<a;
}

void cube()
{
	float l,a,v;
	cout<<"\n\nEnter length of side of cube -->\t";
	cin>>l;
	v=l*l*l;
	a=6*l*l;
	cout<<"\n\nVolume of cube is "<<v;
	cout<<"\n\nSurface area of cube is "<<a;
}

void cylinder()
{
	float r,h,v,c,t;
	cout<<"\n\nEnter radius of cylinder -->\t";
	cin>>r;
	cout<<"\n\nEnter height of cylinder -->\t";
	cin>>h;
	v=3.14*r*r*h;
	c=2*3.14*r*h;
	t=3.14*r*(2*h+r);
	cout<<"\n\nVolume of cylinder is "<<v;
	cout<<"\n\nCurved Surface Area of cylinder is "<<c;
	cout<<"\n\nTotal Surface Area of cylinder is "<<t;
}

void cone()
{
	float r,h,l,v,c,t;
	cout<<"\n\nEnter radius of cone -->\t";
	cin>>r;
	cout<<"\n\nEnter height of cone -->\t";
	cin>>h;
	l=sqrt(r*r+h*h);
	v=(3.14*r*r*h)/3;
	c=3.14*r*l;
	t=3.14*r*(l+r);
	cout<<"\n\nSlant height of cone is "<<l;
	cout<<"\n\nVolume of cone is "<<v;
	cout<<"\n\nCurved Surface Area of cone is "<<c;
	cout<<"\n\nTotal Surface Area of cone is "<<t;
}

void sphere()
{
	float r,v,a;
	cout<<"\n\nEnter radius of sphere -->\t";
	cin>>r;
	v=(4*3.14*r*r*r)/3;
	a=4+3.14*r*r;
	cout<<"\n\nVolume of sphere is "<<v;
	cout<<"\n\nSurface Area of sphere is "<<a;
}

void hemisphere()
{
	float r,v,c,t;
	cout<<"\n\nEnter radius of hemisphere -->\t";
	cin>>r;
	v=(2*3.14*r*r*r)/3;
	c=2*3.14*r*r;
	t=3*3.14*r*r;
	cout<<"\n\nVolume of hemisphere is "<<v;
	cout<<"\n\nCurved Surface Area of hemisphere is "<<c;
	cout<<"\n\nTotal Surface Area of hemisphere is "<<t;
}

void triangle()
{
	float b,h,a;

	cout<<"\n\nEnter base of triangle -->\t";
	cin>>b;
	cout<<"\n\nEnter height of triangle -->\t";
	cin>>h;

	a=(b*h)/2;
	cout<<"\n\nArea of the triangle is "<<a;

}

void rectangle()
{
	float l,b,a,p;
	cout<<"\n\nEnter length of rectangle -->\t";
	cin>>l;
	cout<<"\n\nEnter breadth of rectangle -->\t";
	cin>>b;
	a=l*b;
	p=2*(l+b);
	cout<<"\n\nArea of rectangle is "<<a;
	cout<<"\n\nPerimeter of rectangle is "<<p;
}

void square()
{
	float s,a,p;
	cout<<"\n\nEnter length of side of square -->\t";
	cin>>s;
	a=s*s;
	p=4*s;
	cout<<"\n\nArea of square is "<<a;
	cout<<"\n\nPerimeter of square is "<<p;
}

void circle()
{
	float r,a,c;
	cout<<"\n\nEnter radius of circle -->\t";
	cin>>r;
	a=3.14*r*r;
	c=2*3.14*r;
	cout<<"\n\nArea of circle is "<<a;
	cout<<"\n\nCircumference of circle is "<<c;
}

void parallelogram()
{
	float b,h,a,p;
	cout<<"\n\nEnter base of parallelogram -->\t";
	cin>>b;
	cout<<"\n\nEnter height of parallelogram -->\t";
	cin>>h;
	a=b*h;
	p=2*(b+h);
	cout<<"\n\nArea of parallelogram is "<<a;
	cout<<"\n\nPerimeter of parallelogram is "<<p;
}

i've put up a lot more progs at my forum. classmates really find it useful since none of them is interested in computers. its so sad...

[max_demon]

My Program to calculate Addition

#include <stdlib.h>
main()
{
float a,b,c,total,multiply,add,input;
printf("Welcome to Demon Calculator \n\n");
printf("Enter the values-\n\n");
printf("a:");
scanf("%f",&a);
printf("b:");
scanf("%f",&b);
printf("c:");
scanf("%f",&c);

total=a*b*c;
if (total>80000)
printf("Meri Marzi , tu khud solve kar.\a\a\a\a\a\a\a\a\a\n\n");
else
printf("The answer is %f\n\n\a\a",total);
system("pause");
}

[Ron]

scanf("%d%d%d",&a,&b,&c);
New to c++.......Whta those this line means

[Yamaraj]

Originally Posted by Intel_Gigacore

#include <stdio.h>
main()
{	
	int	a,b,c,big;
	printf("Enter Three numbers");
	scanf("%d%d%d",&a,&b,&c);
	if(a>b)
		if(a>c)
			big=a;
		else
			big=c;
	else
		if(b>c)
			big=b;
		else
			big=c;
	printf("Largest of %d,%d and %d = %d",a,b,c,big);
}

Your program lacks proper braces and a return statement.

Originally Posted by xbonez

here's a prog to calc area, surface area, volume, total surface area etc. of numerous 2D and 3D figures using functions

i had made this one for a friend - it was his project

...

i've put up a lot more progs at my forum. classmates really find it useful since none of them is interested in computers. its so sad...

Your code doesn't conform to either ISO C or C++ standards.

Originally Posted by Ron

scanf("%d%d%d",&a,&b,&c);
New to c++.......Whta those this line means

scanf() is a C input function, which is considered unsafe except for formatted data. I advise learning C first, before opting for a much larger, bloated and complex language as C++.

[fun2sh]

+no the program is correct dude

[Gigacore]

i added the return statement, is it rite now?

[Pathik]

Originally Posted by Ron

scanf("%d%d%d",&a,&b,&c);
New to c++.......Whta those this line means

y r u using scanf in c++???

[QwertyManiac]

Originally Posted by Yamaraj

Your code doesn't conform to either ISO C or C++ standards.

Don't be so hard on him He doesn't know TC++'s evils

Anyway, here's xbonez's program in proper code

#include<iostream>
#include<math.h>

using namespace std;

void line(void);
void cuboid(void);
void cube(void);
void cylinder(void);
void cone(void);
void sphere(void);
void hemisphere(void);
void triangle(void);
void rectangle(void);
void square(void);
void circle(void);
void parallelogram(void);

int main()
{ 
    int o1,o2;
    do{
         
        cout<<"\n\n1. 3-D Figures"
            <<"\n\n2. Plane Figures"
            <<"\n\n3. Exit"
            <<"\n\nEnter your choice -->\t";
        cin>>o1;

        switch(o1)
        {
            case 1:         cout<<"\n\n";
                    line();
                    cout<<"\n\t\t\t\t3-D Figures\n\n";
                    line();
                    cout<<"\n\n1. Cuboid"
                        <<"\n\n2. Cube"
                        <<"\n\n3. Cylinder"
                        <<"\n\n4. Cone"
                        <<"\n\n5. Sphere"
                        <<"\n\n6. Hemisphere"
                        <<"\n\n7. Main Menu"
                        <<"\n\nEnter your choice -->\t";
                        cin>>o2;
                        switch(o2)
                        {
                        case 1:        cout<<"\n\n";
                                line();
                                cout<<"\n\t\t\t\tCuboid\n\n";
                                line();
                                cuboid();
                                
                                break;

                        case 2:        cout<<"\n\n";
                                line();
                                cout<<"\n\t\t\t\tCube\n\n";
                                line();
                                cube();
                                
                                break;

                        case 3:        cout<<"\n\n";
                                line();
                                cout<<"\n\t\t\t\tCylinder\n\n";
                                line();
                                cylinder();
                                
                                break;

                        case 4:        cout<<"\n\n";
                                line();
                                cout<<"\n\t\t\t\tCone\n\n";
                                line();
                                cone();
                                break;

                        case 5:        cout<<"\n\n";
                                line();
                                cout<<"\n\t\t\t\tSphere\n\n";
                                line();
                                sphere();
                                break;

                        case 6:        cout<<"\n\n";
                                line();
                                cout<<"\n\t\t\t\tHemisphere\n\n";
                                line();
                                hemisphere();
                                break;

                        case 7:        break;


                        default:    cout<<"\n\nInvalid Input\a\a\a";
                        }
                        
                        break;

            case 2:            
                        cout<<"\n\n";
                        line();
                        cout<<"\n\t\t\t\tPlane Figures\n\n";
                        line();
                        cout<<"\n\n1. Traingle"
                        <<"\n\n2. Rectangle"
                        <<"\n\n3. Sqaure"
                        <<"\n\n4. Circle"
                        <<"\n\n5. Parallelogram"
                        <<"\n\n6. Main Menu"
                        <<"\n\nEnter your choice -->\t";
                        cin>>o2;

                        switch(o2)
                        {
                            case 1:        cout<<"\n\n";
                                    line();
                                    cout<<"\n\t\t\t\tTraingle\n\n";
                                    line();
                                    triangle();
                                    
                                    break;

                            case 2:        cout<<"\n\n";
                                    line();
                                    cout<<"\n\t\t\t\tRectangle\n\n";
                                    line();
                                    rectangle();
                                    
                                    break;

                            case 3:         cout<<"\n\n";
                                    line();
                                    cout<<"\n\t\t\t\tSquare\n\n";
                                    line();
                                    square();
                                    
                                    break;

                            case 4:        cout<<"\n\n";
                                    line();
                                    cout<<"\n\t\t\t\tCircle\n\n";
                                    line();
                                    circle();
                                    break;

                            case 5:        cout<<"\n\n";
                                    line();
                                    cout<<"\n\t\t\t\tParallelogram\n\n";
                                    line();
                                    parallelogram();
                                    break;

                            case 6:        break;


                            default:    cout<<"\n\nInvalid Input\a\a\a";
                        }

                        break;

            case 3:             cout<<"\n\nPress any key to exit...\a";
                        break;

            default:        cout<<"\n\nInvalid Input\a\a\a\a";



        }

    }while(o1!=3);
return 0;
}


void line()
{
    int i;
    for (i=0;i<80;i++)
        cout<<"*";
}

void cuboid()
{
    float l,b,h,a,v;
    cout<<"\n\nEnter length of cuboid -->\t";
    cin>>l;
    cout<<"\n\nEnter breadth of cuboid -->\t";
    cin>>b;
    cout<<"\n\nEnter height of cuboid -->\t";
    cin>>h;
    v=l*b*h;
    a=2*(l*b+b*h+l*h);
    cout<<"\n\nVolume of cuboid is "<<v;
    cout<<"\n\nSurface area of cuboid is "<<a;
}

void cube()
{
    float l,a,v;
    cout<<"\n\nEnter length of side of cube -->\t";
    cin>>l;
    v=l*l*l;
    a=6*l*l;
    cout<<"\n\nVolume of cube is "<<v;
    cout<<"\n\nSurface area of cube is "<<a;
}

void cylinder()
{
    float r,h,v,c,t;
    cout<<"\n\nEnter radius of cylinder -->\t";
    cin>>r;
    cout<<"\n\nEnter height of cylinder -->\t";
    cin>>h;
    v=3.14*r*r*h;
    c=2*3.14*r*h;
    t=3.14*r*(2*h+r);
    cout<<"\n\nVolume of cylinder is "<<v;
    cout<<"\n\nCurved Surface Area of cylinder is "<<c;
    cout<<"\n\nTotal Surface Area of cylinder is "<<t;
}

void cone()
{
    float r,h,l,v,c,t;
    cout<<"\n\nEnter radius of cone -->\t";
    cin>>r;
    cout<<"\n\nEnter height of cone -->\t";
    cin>>h;
    l=sqrt(r*r+h*h);
    v=(3.14*r*r*h)/3;
    c=3.14*r*l;
    t=3.14*r*(l+r);
    cout<<"\n\nSlant height of cone is "<<l;
    cout<<"\n\nVolume of cone is "<<v;
    cout<<"\n\nCurved Surface Area of cone is "<<c;
    cout<<"\n\nTotal Surface Area of cone is "<<t;
}

void sphere()
{
    float r,v,a;
    cout<<"\n\nEnter radius of sphere -->\t";
    cin>>r;
    v=(4*3.14*r*r*r)/3;
    a=4+3.14*r*r;
    cout<<"\n\nVolume of sphere is "<<v;
    cout<<"\n\nSurface Area of sphere is "<<a;
}

void hemisphere()
{
    float r,v,c,t;
    cout<<"\n\nEnter radius of hemisphere -->\t";
    cin>>r;
    v=(2*3.14*r*r*r)/3;
    c=2*3.14*r*r;
    t=3*3.14*r*r;
    cout<<"\n\nVolume of hemisphere is "<<v;
    cout<<"\n\nCurved Surface Area of hemisphere is "<<c;
    cout<<"\n\nTotal Surface Area of hemisphere is "<<t;
}

void triangle()
{
    float b,h,a;

    cout<<"\n\nEnter base of triangle -->\t";
    cin>>b;
    cout<<"\n\nEnter height of triangle -->\t";
    cin>>h;

    a=(b*h)/2;
    cout<<"\n\nArea of the triangle is "<<a;

}

void rectangle()
{
    float l,b,a,p;
    cout<<"\n\nEnter length of rectangle -->\t";
    cin>>l;
    cout<<"\n\nEnter breadth of rectangle -->\t";
    cin>>b;
    a=l*b;
    p=2*(l+b);
    cout<<"\n\nArea of rectangle is "<<a;
    cout<<"\n\nPerimeter of rectangle is "<<p;
}

void square()
{
    float s,a,p;
    cout<<"\n\nEnter length of side of square -->\t";
    cin>>s;
    a=s*s;
    p=4*s;
    cout<<"\n\nArea of square is "<<a;
    cout<<"\n\nPerimeter of square is "<<p;
}

void circle()
{
    float r,a,c;
    cout<<"\n\nEnter radius of circle -->\t";
    cin>>r;
    a=3.14*r*r;
    c=2*3.14*r;
    cout<<"\n\nArea of circle is "<<a;
    cout<<"\n\nCircumference of circle is "<<c;
}

void parallelogram()
{
    float b,h,a,p;
    cout<<"\n\nEnter base of parallelogram -->\t";
    cin>>b;
    cout<<"\n\nEnter height of parallelogram -->\t";
    cin>>h;
    a=b*h;
    p=2*(b+h);
    cout<<"\n\nArea of parallelogram is "<<a;
    cout<<"\n\nPerimeter of parallelogram is "<<p;
}

[Gigacore]

Guys... is my program rite now?

[Yamaraj]

Originally Posted by Intel_Gigacore

Guys... is my program rite now?

Try this:

#include <stdio.h>

int main(void)
{	
   int a = 0,
       b = 0,
       c = 0,
       greatest = 0;

   printf("Enter three numbers:\n");
   scanf("%d %d %d", &a, &b, &c);

   greatest = a;
   if(b > greatest)
      greatest = b;
   if(c > greatest)
      greatest = c;

   printf("greatest of %d, %d and %d = %d", a, b, c, greatest);
   return 0;
}

[Gigacore]

^ thanks buddy......

[utsav]

this is a program in which u will hav 2 enter any 5 nos between 1 to 49 and if the number matches with the numbers chosen by the computer, u will win the lottery




#include <cstdlib>
#include <iostream>
using namespace std;
void lotto();
void calc(int * a, int * b);
void menu();
// Main function. Seeds random function
// and calls menu function.
int main()


{
srand((unsigned)time(0)); // Seed the random function......
menu();
}
// This function prompts the user to pic
// k five numbers between 1 and 49.
// The function makes sure that the user
// picks numbers between 1 and 49,
// and that the user does not choose dup
// licate numbers. Then the computer
// chooses five random numbers. Error co
// ntrol is used to check if the
// computer chooses the same number twic
// e. Then the numbers are displayed
// to the screen. Finally the calc funct
// ion is called to calculate and
// output the results of the game...
void lotto()


{
int i, k, j, b, x, y;// variables for all the for loops....
int s, t, user_error;
int user[5], comp[5];// arrays for user and computers numbers....
int user_error_check, comp_error_check; // to find if numbers are duplicates....
// Prompt user to choose numbers
cout << "Please choose five numbers from 0 to 49" << endl;
for (i=0; i<5; i++)


{
cout << "Enter number " << i + 1 << ":" ;
cin >> user[i];
if (user[i] > 49 || user[i] < 0)


{
cout << "You did not enter a number from 0 to 49" << endl;
i--;
}

}
// ERROR CONTROL, to make sure that the
// user does not choose the
// same number twice.................
for(s=0; s<5; s++)
for(t=0; t<s; t++)


{
user_error_check = user[s];
if(user_error_check == user[t])


{
cout << "You have chosen duplicate numbers, please choose another number: " << endl;
cin >> user_error;
user[s] = user_error;
}
}

// Now the computer chooses numbers.....
// ........
for (k=0; k<5; k++)


{
comp[k] = (rand( ) % 49) + 1; // get comp to randomly generate 1 -49
}
// ERROR CONTROL, to make sure that the
// computer does not pick
// the same number twice.......

for(x=0; x<5; x++)
for(y=0; y<x; y++)


{
comp_error_check = comp[x];
if (comp_error_check == comp[y])


{
comp[x] = (rand() % 49) + 1;
}
} // no guarentee that the computer will not choose another number
// already in the array, but it's the be
// st i can do?????

cout << "You chose: " ;// output users numbers...
for (j=0; j<5; j++)


{
cout << user[j] << ", " ;
}

cout << endl;

cout << "The computer chose: "; // output computers numbers...
for (b=0; b<5; b++)


{
cout << comp[b] << ", " ;
}
cout << endl << endl;

calc(user, comp);// Obtain the results of the game......
}
// This function compares the computers
// random numbers to the numbers
// chosen by the user and lets the user
// know how many (if any) they
// have matched..............
void calc(int * a, int * b)


{
int i, k, match =0;
for (i=0; i<5; i++)
for (k=0; k<5; k++)
if ( a[i] == b[k] )


{
match += 1;
cout << "You have matched: " << a[i] << endl;
}
if (match == 0)


{
cout << "Sorry you have not matched any of the computers numbers..."
<< endl << endl;
}
if (match == 5)


{
cout << "CONGRATULATIONS, YOU HAVE WON THE LOTTERY!!!!!!!" << endl << endl;
}
}
// This function informs the user how to
// play the game and then allows
// the user to play the game until they
// enter 'q' or 'Q' at the prompt.
void menu()


{
char choice;
cout << endl;
cout << "$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$" << endl;
cout << "$(C)$" << endl;
cout << "$ $" << endl;
cout << "$ *The computer will randomly choose five numbers $" << endl;
cout << "$ between 1 and 49.$" << endl;
cout << "$ $" << endl;
cout << "$ *You can choose five numbers and try to match$" << endl;
cout << "$ the computers numbers...... $" << endl;
cout << "$ $" << endl;
cout << "$ **Do not pick the same number twice or pick a$" << endl;
cout << "$number less than 1 or greater than 49, o.k.?$" << endl;
cout << "$ $" << endl;
cout << "$ $" << endl;
cout << "$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$" << endl;
cout << endl;
while (choice != 'q' || choice != 'Q')


{

cout << "Make a selection from the menu: " << endl;
cout << "[P]- Play the clotto against the computer." << endl;
cout << "[Q]- Exit this program." << endl;
cin >> choice;
switch(choice)


{
case 'p':
case 'P':
lotto();
break;
case 'q':
case 'Q':
cout << "No lotto for you!" << endl;
exit(0);
break;
}
}
}

[ratedrsuperstar]

^^this is totally wrong what if b>c>gr8test there's no condition to test that

use this thread to request programs and then pm to the requester rather than posting so much code over here it really looks a mess and these are quite basic too

[Gigacore]

@ utsav... did it execute buddy?

[Yamaraj]

Originally Posted by ratedrsuperstar

^^this is totally wrong what if b>c>gr8test there's no condition to test that

Rules of programming:
1. Read the fscking code. And mine is pretty readable.
2. Test it before complaining.
3. If you still don't get it, it's time to buy a decent C book.

[xbonez]

@yamraj : what was wrong with my prog?? it seemed to run perfectly fine

[Yamaraj]

Originally Posted by xbonez

@yamraj : what was wrong with my prog?? it seemed to run perfectly fine

Using implementation dependent libraries and functions like clrscr(), and the nonstandard "void main()" violates the rules of the ISO C++ standard. Your executable may run fine on a system, but your code needs more love.

I recommend a decent and recent C++ book, like C++: How To Program, C++ Primer, 4th/e or C++ Primer Plus.

[utsav]

@ gigacore it executed nicely on devc++. tell me the problm with my program

[Sykora]

And for heaven's sake indent the code like the first post. It's unreadable otherwise.

[Gigacore]

Program To Reverse a Number

#include <stdio.h>
main()
{
long rev, n, num;
int digit;
printf("\n Enter a number");
scanf("%d", &num);
rev=0;
n=num;
while (num>0)
{
digit = num % 10;
num = num / 10
rev = rev * 10 + digit;
}
printf("\n The number is %d", n);
printf("\n The reverse is %d", rev);
}

[mehulved]

And how about using comments in the code so people like me could understand it faster and better.

[utsav]

^^ i hav used comments in my program

[Gigacore]

use /* before the coment

[shady_inc]

Originally Posted by Intel_Gigacore

use /* before the coment

....and */ after the comment.

can someone tell me what's wrong in this program.Using Dev C++

#include <iostream>
#include <conio.h>
using namespace std;
int main()
{ /*Use of Function*/
float a,b,sum;
float calsum(float a,float b);
cout<<"Enter the two nos.:\n";
cin>>a>>b;
sum=calsum(a,b);
cout<<"The sum is :"<<sum<<"";
}
calsum(float a,float b)
{ float sum;
sum=a+b;
return (sum);
}

[ilugd]

lol... why doesn't thinkdigit have a programming section?

[xbonez]

Originally Posted by Yamaraj

Using implementation dependent libraries and functions like clrscr(), and the nonstandard "void main()" violates the rules of the ISO C++ standard. Your executable may run fine on a system, but your code needs more love.

I recommend a decent and recent C++ book, like C++: How To Program, C++ Primer, 4th/e or C++ Primer Plus.

hmm, u use Oxford and Sumita Arora's textbook for C++. they're our course books in XI and XII

[shady_inc]

Originally Posted by xbonez

hmm, u use Oxford and Sumita Arora's textbook for C++. they're our course books in XI and XII

I find books by Yashavant Kanetkar the best ones for C/C++.

[Sykora]

@shady_inc :
conio.h is non-standard.
Your calsum() doesn't have a forward declaration. Put main() after calsum() or put the line :

int calsum(float, float);

before main().

[Gigacore]

does any know how to write this one?

Write a program using functions to find whether the given number is a prime number?