void main()
          {
             int a;
             clrscr();
             printf("enter number to check=");
             scanf("%d",&a);
                  if(a%2==0)
                   {
                       printf(" given number is even");
                   }
                    else
                      {
                         printf("given number is odd");
                       }
             getch();

            }

      output :
    
            enter number to check=4

             given number is even