指针复制字符串

#include<stdio.h>
char* str_copy(char *d, const char *s)
{
	char *t = d;
	while (*d++ = *s++)  /*另一种解法*/
		;		/*while（d[i] = s[i]）*/	
	return t;	 /*		i++;          */
}

int main(void)
{
	char str[128] = "ABC";
	char tmp[128];
	printf("str = \"%s\"\n", str);
	printf("复制的是：", tmp);
	scanf("%s", tmp);
	str_copy(str, tmp);
	puts("复制了。");
	printf("str = \"%s\"\n",str);
	return 0;
}