替换功能或由文本本身定义

Question

如何替换所有出现的

check_free_set_to_null(&pointer)

通过

if (pointer)
{
    free(pointer)
    printf(pointer have been freed)
}
else
{
    printf(pointer couldnt had been freed)
    return (1)
}

可能使用某种

{1} = check_free_set_to_null（CONTENT）

  if ({1})
    {
        free({1})
        printf({1} have been freed)
    }
    else
    {
        printf({1} couldnt had been freed)
        return (1)
    }

我怎么能这样做？ （请注意，它不完全是必须替换的，它只是一个例子） 我不是在寻找编译器将其解释为多行，我正在寻找修改文件。

Answer 1

您可以将宏用于此作业。

#define check_free_set_to_null(pointer) if (pointer) { \
    free(pointer)\
    printf(pointer have been freed)\
} else {\
    printf(pointer couldnt had been freed)\
    return (1)\
}