问题描述
在我的code几乎每一个功能都有一个或多个的malloc电话，每一次我必须做的是这样的：
In my code almost every function has one or more malloc calls, and each time I have to do something like:
char *ptr = (char *)malloc(sizeof(char) * some_int);
if (ptr == NULL) {
fprintf(stderr, "failed to allocate memory.\n");
return -1;
}
这是code的四个额外的行，如果我加入他们每次之后我用一个malloc，我的code的长度将增加很多..所以有一种优雅的方式来处理这个？
that's four extra lines of code and if I add them everytime after I use a malloc, the length of my code will increase a lot.. so is there an elegant way to deal with this?
感谢你了！
推荐答案
很抱歉，但没有什么可以做，在C.除... 喘气......把它包在所有宏这将自动化如果检查，并允许您编写自定义的错误处理$ C $每次℃。在那里，我说。
Sorry, but there's nothing you can do about that in C. Except... gasp... wrap it all in a macro which will automate the if check and allow you to write custom error-handling code each time. There, I said it.
说真的，并不意味着C到提供这样的便利。如果你不介意当场退出程序，可以在过程中，做退出当分配失败的函数包裹它 - 但是这没有通用的解决方案。
Seriously, C isn't meant to provide conveniences like this. If you don't mind exiting the program on the spot, you can wrap it in a function of course that does exit when the allocation fails -- but that's no general solution.
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