C++ 调试模式自动关闭？

所以，我开始调试，完成了这么多代码

#include <cmath>
#include <string>
#include <iostream>

using namespace std;

int main()
{
    double radius,width,length,height,area,base;
    int shape;
    const double pi =3.14159;
    cout<< "Please choose from the following menu. \n"
            "Geometry Calculator \n"
            "1. Calculate the Area of a Circle \n"
            "2. Calculate the Area of a Rectangle\n"
            "3. Calculate the Area of a Triangle\n"
            "4. Quit\n";
    cin>>shape;
    if(shape>4 || shape < 1)
    {
        cout<<"Your selection was not acceptable.\n\a\a"
              "Please choose from the following menu. \n"
              "Geometry Calculator \n"
              "1. Calculate the Area of a Circle \n"
              "2. Calculate the Area of a Rectangle\n"
              "3. Calculate the Area of a Triangle\n"
              "4. Quit\n";
    }
switch (shape)
{
case '1':
    cout<<"What is the radius of the circle?\n";
    cin>>radius;
    if(radius<0)
    {
        cout<<"Please enter a non-negative radius.\n\a";
        cin>>radius;
    }

    area = pow(radius,2) * pi;

    cout<<"Your circle has an area of " <<area<<".";
    break;


case '2':
    cout<<"What is the width of the rectangle?\n";
    cin>>width;
    if(width<0)
    {
        cout<<"Please enter a non-negative width.\n\a";
        cin>>width;
    }
    cout<<"What is the length of the rectangle?\n";
    cin>>length;
    if(length<0)
    {
        cout<<"Please enter a non-negative length.\n\a";
        cin>>length;
    }
    area = length * width;
    cout<<"The area of your rectangle is " <<area<<".\n";
    break;

case '3':
    cout<<"What is the base of the triangle?\n";
    cin>>base;
    if(base<0)
    {
        cout<<"Please enter a non-negative base measurement.\n\a";
        cin>>base;
    }
    cout<<"What is the height of the triangle?\n";
    cin>>height;
    if(height<0)
    {
        cout<<"Please enter a non-negative height measurement.\n\a";
        cin>>height;
    }
    area = base*height*.5;
    cout<<"Your triangle's area is "<<area<<".\n";
    break;
}
}

---

到底发生了什么，我该如何修复它呢？

您的错误是在switch语句中使用了

int

和

字符

将案例“1”更改为案例1

对于你的信息，C++中的字符根据它们保存为数字，这就是为什么您的程序没有抱怨您试图用输入检查值为
49
的
'1'
。
问题是您正在将
shape
读取为
int
，而将
切换为
char
。
您的开关盒应该看起来像
案例1:
，而不是
案例“1”：

为了防止程序在完成后关闭控制台，您可以添加一个
cin.get（）
，以等待在代码末尾按键。
需要更多信息。它是在你输入一个数字之前突然关闭，还是在你输入一个数字之后突然关闭？很抱歉，当我输入一个数字并按enter键时它就会关闭这就是你告诉它要做的：），请参见下面的答案。好的，我想我需要澄清的是，我只是把它开头的片段和它似乎卡住的地方放在了一起。后面有一个switch语句it@HeatherT我认为这是一个“我们需要看到更多代码”的例子。“似乎被卡住的地方”可能不是它真正被卡住的地方。我一评论完就加了。现在到了啊。让我改变一下，我试着按照课本上的switch语句来做，但我没有意识到它使用的是char类型。非常感谢。我想这只是开关的语法。：）
'heather t chapter 4 21.exe' (Win32): Loaded 'C:\Users\Heather\Documents\Visual Studio 2012\Projects\heather t chapter 4 21\Debug\heather t chapter 4 21.exe'. Symbols loaded.
'heather t chapter 4 21.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ntdll.dll'. Cannot find or open the PDB file.
'heather t chapter 4 21.exe' (Win32): Loaded 'C:\Windows\SysWOW64\kernel32.dll'. Cannot find or open the PDB file.
'heather t chapter 4 21.exe' (Win32): Loaded 'C:\Windows\SysWOW64\KernelBase.dll'. Cannot find or open the PDB file.
'heather t chapter 4 21.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcp110d.dll'. Symbols loaded.
'heather t chapter 4 21.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcr110d.dll'. Symbols loaded.
The program '[3800] heather t chapter 4 21.exe' has exited with code 0 (0x0).