Problem C: 指针：自定义函数length，调用它计算字符串的长度

#include<stdio.h>
int length(char*s)
{
    int i,count;
    while(*s!='\0')
    {
        *(s++);
        count++;
    }
    return count;
 } 

 int main()
 {
     char s[];
     while(gets(s)!=NULL)
     {
         int t;
         t=length(s);
         printf("%d\n",t);
     }
     return ;
 }