#include<stdio.h>
int main()
{
int max(int x, int y);
int a, b, c;
printf("input a&b:");
scanf_s("%d,%d",&a,&b);
c = max(a, b);
printf("max=%d\n", c);
return 0;
}
int max(int x,int y)
{int z;
if (x>y)z = x;
else z = y;
return(z);
}