C++
Program to change the background colors on the screen
#include <conio.h>
#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
void main (int)
{
int gdriver=DETECT,gmode,errorcode; //Requesting auto-detection.
int midx,midy,x;
//Initializing graphics and local variables.
initgraph(&gdriver,&gmode,"d:\\bc3\\bgi");
//Reading...
>>
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Program to draw circles
#include <iostream.h>
#include <conio.h>
#include <graphics.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
void main()
{
clrscr();
int gd=DETECT,gm,errorcode; //Requesting auto-detection.
//Initializing graphics and local...
>>
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Program to draw 2 rectangles and fill 1 of them
#include <iostream.h>
#include <conio.h>
#include <graphics.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
void main()
{
clrscr();
int gd = DETECT,gm,errorcode; //Requesting auto-detection.
//Initializing graphics and local variables.
initgraph (&gd, &gm,...
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Program to enter an integer and print out its successor
#include <iostream.h>
#include <conio.h>
void value(int);
void main()
{
clrscr();
int x;
cout << "Enter an integer : ";
cin>>x;
cout << "The successor of " << x << " is ";
value(x);
getch();
}
void value(int x)
{
x++;
cout << x << "." <<...
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Program to enter an integer and output the cube of that integer
#include <iostream.h>
#include <conio.h>
int cube(int x); //The prototype.
void main()
{
clrscr();
int a;
cout << "Enter an integer : ";
cin>>a;
cout << "The cube of " << a << " is : " << cube(a) << endl; //Call the function cube(a).
getch();
}
//Defining...
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Program to enter a string and find its length
#include <iostream.h>
#include <conio.h>
#include <string.h>
void main()
{
clrscr();
int slength;
char x[81]; //Allowing the user to input a maximum of 80 characters.
cout << "Enter the string : " << endl;
cin>>x;
slength=strlen(x);
cout << "The length of the string "...
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Program to enter an integer and print if it is prime or composite
#include <iostream.h>
#include <conio.h>
#include <process.h>
void main()
{
clrscr();
int num1,x;
cout << "Enter an integer : " << endl;
cin>>num1;
for(x=2;x<num1;x++)
{
if(num1%x==0)
{
cout << num1 << " is a composite number." <<...
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Program to enter the principal, rate & time and print the simple interest
#include <iostream.h>
#include <conio.h>
void main()
{
clrscr();
int x;
float sinterest,principal,rate,time;
for(x=4;x>=0;x--)
{
cout << "Enter the principal, rate & time : " << endl;
cin>>principal>>rate>>time;
sinterest=(principal*rate*time)/100;
cout << "Principal =...
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Program to switch between different cases
#include <iostream.h>
#include <conio.h>
int main()
{
clrscr();
int choice;
cout << "1. Talk" << endl;
cout << "2. Eat" << endl;
cout << "3. Play" << endl;
cout << "4. Sleep" << endl;
cout << "Enter your choice : " <<...
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Program to enter the sale value and print the agent's commission
#include <iostream.h>
#include <conio.h>
void main()
{
clrscr();
long int svalue;
float commission;
cout << "Enter the total sale value : " << endl;
cin>>svalue;
if(svalue<=10000)
{
commission=svalue*5/100;
cout << "For a total sale value of $" << svalue <<...
>>
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