#include<stdio.h>
#include<Windows.h>
#include<assert.h>


char* my_strcpy(char* dest, const char* src)
{
	char *ret1 = dest;//記錄目標字元陣列的地址
	assert(dest != NULL);
	assert(src != NULL);
	while (*dest++ = *src++)
	{
		;
	}
	return ret1;
}
char* my_strcat(char *dest, const char*src)
{
	char* ret2 = dest;
	assert(dest != NULL);
	assert(src != NULL);
	while (*dest)
	{
		dest++;
	}
	while (*dest++ = *src++)
	{
		;
	}
	return ret2;
}
int main()
{
	char dest[10];
	char dest1[20] = "hello ";
	char *psrc2 = "word";
	char *ret1 = my_strcpy(dest, psrc2);
	char *ret2 = my_strcat(dest1, psrc2);
	printf("dest[] = %s\n", ret1);
	printf("psrc1 = %s\n",ret2);

	system("pause");
	return 0;
}