指针实现 strncpy（）字符串有限拷贝

strncpy（）字符串有限拷贝

#include <stdio.h>int main(){char str1[100];char str2[100];int n;printf ("please input two strings:\n");gets(str1);gets(str2);printf ("please input the number of copies:\n");scanf ("%d",&n);char *p1 = str1;char *p2 = str2;int j = 0;while (j < n){*(p1++) = *(p2++);j++;}if (sizeof(str1) <= sizeof(str2))*p1 = '\0';printf ("the result is:\n");puts(str1);return 0;}