#include<stdio.h>
#include<stdlib.h>
void mystr(char *arr2, char *arr1,int length)
{
int i;
for (i = 0; i < length; i++)
{
if (*(arr1+i) != ‘\0‘)
{
*(arr2 + i) = *(arr1 + i);
}
}
}
int main()
{
char arr1[]= "abcde";
char arr2[]= " ";
int length = strlen(arr1);
mystr(arr2, arr1,length);
printf("%s", arr2);
system("pause");
return 0;
}原文：https://blog.51cto.com/14232799/2393378