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  • C语言下的错误处理的问题

    下面是三种C语言的错误处理,你喜欢哪一种?还是都不喜欢?

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    /* 问题: 不充分,而且很容易出错,前面成功分配的资源,后面出错需要帮助释放 */
    int foo(int bar)
    {
            int return_value = 0;
            int doing_okay = 1;
            doing_okay = do_something( bar );
            if (doing_okay)
            {
                    doing_okay = init_stuff();
            }
            if (doing_okay)
            {
                    doing_okay = prepare_stuff();
            }
            if (doing_okay)
            {
                    return_value = do_the_thing( bar );
            }
            return return_value;
    }

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    /* 问题: 使用goto语句是很不好的 */
    int foo(int bar)
    {
            if (!do_something( bar )) {
                    goto error;
            }
            if (!init_stuff( bar )) {
                    goto error;
            }
            if (!prepare_stuff( bar )) {
                    goto error;
            }
            return do_the_thing( bar );
    error:
            return 0;
    }
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    /* 问题:太多的if嵌套了,无法阅读 */
    int foo(int bar)
    {
            int return_value = 0;
            if (do_something( bar )) {
                    if (init_stuff( bar )) {
                            if (prepare_stuff( bar )) {
                                    return_value = do_the_thing( bar );
                             }
                    }
            }
            return return_value;
    }
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  • 原文地址:https://www.cnblogs.com/alantu2018/p/8503738.html
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