C language simulation implements strcat() of standard library function

strcat()

strcat用于将两个char类型链接的函数。

char * my_strcat(char *str1, char *str2)
{
    assert(str2);
    assert(str1);

    char * p = str1;

    while (*str1 != 0)
    {
        str1++;
    }
    while (*str1++ = *str2++)
    {
        ;
    }
    return p;
}
int main()
{
    char str1[10] = "abc";
    char str2[10] = "def";
    char * ret = my_strcat(str1, str2);
    printf("%s", ret);

    system("pause");
    return 0;
}