#include<stdio.h>
#include<string.h>
char hanshu(char *,char *,int);
main()
{
    char ch1[30],ch2[10];
    gets(ch2);
    hanshu(ch1,ch2,8);
    printf("%s",ch1);
    }
char hanshu(char *string1,char *string2,int n)
{
    char *temp=string1;
    while(n&&*string2!='\0')
       {
            *string1=*string2;
           string1++;
           string2++;
           n--;
           }
    if(n)
    {
        while(n)
           {
               *string1='\0';
              string1++;
              }
        }
     return temp;   
    }
编译通过，但是测试结果不准确，