C/C++ 中的“-->”運算符是什麼？ - What is the “-->” operator in C/C++?

問題：

After reading Hidden Features and Dark Corners of C++/STL on comp.lang.c++.moderated , I was completely surprised that the following snippet compiled and worked in both Visual Studio 2008 and G++ 4.4.在comp.lang.c++.moderated上閱讀C++/STL 的隱藏功能和comp.lang.c++.moderated ，我完全驚訝於以下代碼段在 Visual Studio 2008 和 G++ 4.4 中編譯和運行。

Here's the code:這是代碼：

#include <stdio.h>
int main()
{
    int x = 10;
    while (x --> 0) // x goes to 0
    {
        printf("%d ", x);
    }
}

Output:輸出：

9 8 7 6 5 4 3 2 1 0

I'd assume this is C, since it works in GCC as well.我認爲這是 C，因爲它也適用於 GCC。 Where is this defined in the standard, and where has it come from?這在標準中在哪裏定義，它來自哪裏？

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解決方案：

參考一： https://stackoom.com/question/6tAK
參考二： What is the “-->” operator in C/C++?