#include<stdio.h>
 
void main()
{
   int n, c = 2;
 
   printf("Enter a number to check if it is prime\n");
   scanf("%d",&n);
 
   for ( c = 2 ; c <= n - 1 ; c++ )
   {
      if ( n%c == 0 )
      {
         printf("%d is not prime.\n", n);
	 break;

#include<stdio.h>
#include<conio.h>

void main()
{
       int side,area;
       printf("Enter side of Square");
       scanf("%d",&side");
       area=side*side;
       printf(" \n Area of Square is : %d sq units",area);
       getch();
}

#include<stdio.h>
#include<conio.h>

void main()
{
      int max,i;
      printf("Enter value of max");

    #include<stdio.h>
    #include<string.h>
      main()
    {
     
     
        char arr[10];
        printf("Enter a string to reverse\n");

// Sample program to explain atoi()
        #include<stdio.h>
	#include<stdlib.h>

	int main ()
	{
		int i;
		char buffer [256];

		printf ("Enter a number: ");
		fgets (buffer, 256, stdin);

#include <iostream.h>  
#include <conio.h>
void main ()
{
    cout << "Hello World";
    getch();