Largest No. Out Of Two Nos. Without Using Relational Operator or >,<,+,- In C Language

#include<stdio.h>

void main()

{

int a,b,c;

clrscr();

printf("\n Enter First No.:- ");

scanf("%d",&a);

printf("\n Enter Second No.:- ");

scanf("%d",&b);

c = a/b;

if(c==0)

    printf("\n %d is greater.",b);

else

    printf("\n %d is greater.",a);

getch();

}