在C函数返回结构 [英] Returning struct in a c function

问题描述

我有类似如下因素C code：

I have something like the folowing C code:

struct MyStruct MyFunction (something here)
{
    struct MyStruct data;

    //Some code here

    return data;
}

将返回值是一个参考或者用于数据的存储块的副本？
如果MyFunction的收益结构MYSTRUCT *（与相应的内存分配），而不是结构MYSTRUCT？

would the returning value be a reference or a copy of the memory block for data? Should MyFunction return struct MyStruct* (with the corresponding memory allocation) instead of struct MyStruct?

推荐答案

这将返回一个副本。 C是一个传递价值的语言。除非您指定围绕传递指针，结构被复制的任务，return语句，并作为函数参数使用时。

It would return a copy. C is a pass-by-value language. Unless you specify that you are passing pointers around, structures get copied for assignments, return statements, and when used as function parameters.

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