#include <stdio.h>
#include <string.h>
#include <stdlib.h>
char *mycpy(char *dst, const char *srt);
int main() {
char s2[10] = "";
scanf("%s", s2);
printf("s2=%s\n", s2);
char *s1 = (char *)malloc(strlen(s2) + 1);
mycpy(s1, s2);
printf("s1=%s \ns2=%s", s1, s2);
return 0;
}
char *mycpy(char *dst, const char *srt) {
char *ret = dst;
while (*srt != '\0') {
*dst = *srt;
srt++;
dst++;
}
*dst = '\0';
return dst;
}