自定义函数完成字符串的复制功能，并编写主函数来测试?

Question

自定义函数（函数为：char stringcpy(char*to,char*from)）完成字符串的复制功能，并编写主函数来测试

Answer 1

char *stringcpy(char *to,char *from){int i = 0;while(to[i] = from[i])i++;return to;}

Answer 2

#include "stdio.h"char *stringcpy(char *to,char *from){int i;for(i=0;from[i];i++)to[i]=from[i];to[i]=0;return to;}main(){char *s1="abc",*s2="abcdefg";stringcpy(s1,s2);puts(s1);}