模拟实现strcat函数（字符串追加函数）

#include<stdio.h>
#include<assert.h>
char* my_strcat(char* dest, const char* bata)
{
	assert(dest && bata);
	char* sta = dest;
	while (*dest)
	{
		dest++;
	}
	while (*dest++ = *bata++)
	{
		;
	}
	return sta;
}
void test()
{
	char arr[30] = "hello my ";
	char bata[] = "world";
	char* buf = my_strcat(arr, bata);
	printf("%s\n", arr);
}