# include<stdio.h>int main(){int a,b,c,d;scanf("%d %d %d",&a,&b,&c);d=max(a,b,c);printf("max=%d",d);return 0;}int max(int x,int y,int z){int u;if(x>y&&x>z)u=x;elseif(y>x&&y>z)u=y;elseu=z;return(u)}为什么运行不了😭😭😭