C编程数字比大小

# include void main() { int max(int x,int y,int z); int a,b,c,d; scanf("%d,%d,%d",&a,&b,&c); d=max(a,b,c); printf("max = %d\n",d); } int max(int x,int y,int z) { int m,int n; if(x>y) m = x; else m = y; if(m>z) n = m; else n = z; return(n); }