c语言实现strcpy

#include <stdio.h>#include <assert.h>#include <string.h>char *my_strcpy(char *dest,const char *src){assert(dest);assert(src);char *tmp = dest;while((*dest++ = *src++)!='\0');return tmp;}int main(){char a[20];char b[] = "abcdefg";my_strcpy(a,b);printf("%s\n",a);return 0;}