#include <stdio.h>

int Max(int x, int y)

{

int r;

if(x>y) r=x;

else r=y;

return r;

}

int main()

{

int a,b,c;

printf("Input a b: ");

scanf("%d%d",&a,&b);
c=Max(a,b);

printf("max=%d\n",c);

return 0;

}