C++ 中的控制台暂停？
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Console pause in C++?
提问by RCIX
In C# you can cause the console to wait for a character to be input (which is useful for being able to see the last outputs of a console before the program exits). As a beginner in C++, i'm not sure what the equivalent is. Is there one?
在 C# 中，您可以使控制台等待输入字符（这对于能够在程序退出之前查看控制台的最后输出很有用）。作为 C++ 的初学者，我不确定等价物是什么。有吗？
回答by reko_t
The simplest way is simply:
最简单的方法很简单：
std::cin.get();
You can print something like "Press any key to continue..." before that. Some people will tell you about
您可以在此之前打印诸如“按任意键继续...”之类的内容。有些人会告诉你
system("pause");
But don't use it. It's not portable.
但不要使用它。它不便携。
回答by Mephane
#include <stdio.h>
// ...
getchar();
The function waits for a single keypress and returns its (integer) value.
该函数等待单个按键并返回其（整数）值。
For example, I have a function that does the same as System("pause"), but without requiring that "pause.exe" (which is a potential security whole, btw):
例如，我有一个功能与 相同System("pause")，但不需要“pause.exe”（这是一个潜在的安全整体，顺便说一句）：
void pause()
{
std::cout << std::endl << "Press any key to continue...";
getchar();
}
回答by Ignacio Vazquez-Abrams
There is nothing in the standard, and nothing cross-platform. The usual method is to wait for <Enter> to be pressed, then discard the result.
标准中没有任何内容，也没有跨平台的内容。通常的方法是等待 <Enter> 被按下，然后丢弃结果。
回答by adrian
The incorrect solution would be to use system("pause")as this creates security holes (malicious pause.exe in directory!) and is not cross-platform (pause only exists on Windows/DOS).
不正确的解决方案是使用，system("pause")因为这会产生安全漏洞（目录中的恶意 pause.exe！）并且不是跨平台的（暂停仅存在于 Windows/DOS 上）。
There is a simpler solution:
有一个更简单的解决方案：
void myPause() {
printf("Press any key to continue . . .");
getchar();
}
This uses getchar(), which is POSIX compliant (see this).
You can use this function like this:
这使用getchar()，这是符合 POSIX 的（请参阅此）。你可以像这样使用这个函数：
int main() {
...
myPause();
}
This effectively prevents the console from flashing and then exiting.
这有效地防止了控制台闪烁然后退出。
