#include<stdio.h>
int max(int x, int y);
int main()
{
int a, b, d;
int max(int x, int y);
scanf_s("%d,%d", &a, &b);
d = max(a, b);
printf("max=%d", d);
return 0;
}
int max(int x, int y);
{
int z
if (x > y) z = x;
else z = y;
return(z);
}帮忙看下哪里错了