输入两个数，输出最大值

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