gretest

 #include<stdio.h>
       #include<conio.h>
       void main()
       {

              int n1,n2,sum;
              clrscr();
              
              printf("\nEnter 1st number : "); 
              scanf("%d",&n1);

              printf("\nEnter 2nd number : "); 
              scanf("%d",&n2);
              
              if(n1 > n2)              
                     printf("\n1st number is greatest.");
              else
                     printf("\n2nd number is greatest.");

              getch();
       }