Question

没有显示错误，但出于某种原因，在我从cin输入整数之后，窗口关闭忽略了我的答案，这应该确定它是否说“不，这不是我的最爱号码”或继续执行功能。

这是我的代码：

#include <iostream>
using namespace std; 

void printSomething(int x); //Called Prototyping, means that you don't have to have the function on top.

int main() {

    cout << "Yo,\n";
    int a = 16;
    int b = 12;

    int y;

    if(a > b) {
        cout << "Opening Function.\n";
        cout << "\nWhat is my fav number, I forgot: ";
        cin >> y;
        if(y == 10) { //If my fav number is 10 then continue.
            printSomething(y); //Calls the function. (y) is the interger called at (int x)
        }
        else {
            cout << "No that isn't my fav number";
        }
    }
}

void printSomething(int x) { //This is the function. 
    cout << "\nHey! I am the function!\n#########" << endl;
    cout << "I iz lonely.";
    cin.get(); //Meant to keep the terminal open.
}

这是输出：

'Things.exe' (Win32): Loaded 'C:\Users\Matt\Documents\Visual Studio 2015\Projects\Things\Debug\Things.exe'. Symbols loaded.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ntdll.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\kernel32.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\KernelBase.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\vcruntime140d.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcp140d.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\advapi32.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ucrtbased.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcrt.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\sechost.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\rpcrt4.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\sspicli.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\cryptbase.dll'. Cannot find or open the PDB file.
'Things.exe' (Win32): Loaded 'C:\Windows\SysWOW64\bcryptprimitives.dll'. Cannot find or open the PDB file.
The thread 0x2410 has exited with code -1073741510 (0xc000013a).
The thread 0x12a8 has exited with code -1073741510 (0xc000013a).
The thread 0x2b18 has exited with code -1073741510 (0xc000013a).
The thread 0x264c has exited with code -1073741749 (0xc000004b).
The program '[92] Things.exe' has exited with code -1073741510 (0xc000013a).

Answer 1

使用cin.get();暂停程序时，您经常陷入陷阱。当你使用它时，你需要确保输入缓冲区为空，这样代码实际上会阻塞，直到读入一个字符。

流中还有输入的原因是cin >> y;在输入流中离开换行符（从按Enter键）。为了确保输入流为空，您可以使用

std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n')

^{如果输入流中没有任何内容}

，这将暂停程序

有关暂停程序的其他方法，请参阅：Preventing console window from closing on Visual Studio C/C++ Console application

Answer 2

在Visual Studio中，通过 Ctrl + F5 运行程序。

或者从命令解释器实例运行它。

或者，通过Visual Studio调试器运行它（就像你一直在做的那样），但在like_time的{{1}}大括号上有一个断点。

您不需要

。

在这种情况下它不起作用，因为输入缓冲区中至少有一个换行符留在上一个输入操作中，而main只消耗了这个字符，没有进一步的麻烦。

为什么C ++这样做？

2 个答案: