程序代码：

#include "stdafx.h"
#include<stdio.h>
#include<string.h>
void a(char *, unsigned  int);
int main(void)
{
    char b[] = "Hold on to your hats hackers";
    puts(b);
    a(b, 7);
    puts(b);
    puts("Let s look at some more of the string");
    puts(b+8);
    return 0;
    void a(char *string unsigned  int size)
    {
        if(strlen(string) > size)
            *(string + size) = "\0";
    }