strcat字元串拼接函數

摘自linux核心4.11.1源碼string.c

linux/lib/string.c

Copyright (C) 1991, 1992  Linus Torvalds

頭檔案：#include <string.h>

作用：字元串拼接函數，将字元串src拼接至dest目标存儲區

參數：

dest：目标存儲區

src：源字元串

傳回值：

dest 目标存儲區的位址

/**
 * strcat - Append one %NUL-terminated string to another
 * @dest: The string to be appended to
 * @src: The string to append to it
 */
 
char *strcat(char *dest, const char *src)
{
	char *tmp = dest;


	while (*dest)
		dest++;
	while ((*dest++ = *src++) != '\0')
		;
	return tmp;
}