#include<stdio.h>void main (){ int max (int x,int y); int a,b,c,d,e,f; scanf("%d,%d,&d",&a,&b,&c); d=max(a,b); e=max(a,c); f=max(d,e); printf("max=%d\n",f);}int max (int x, int y){ int z; if (x>y) z=x; else z=y; return (z);}我怎么也搞不出来,希望高手可以指正我的错误