c++ - 我很难调试很长的编译时间并且需要多个用户输入

我需要拼命的帮助，因为我无法弄清楚为什么和做错了什么。我正在尝试向用户询问有关长度转换的多个问题。我遇到一个问题，仅问第一个问题，而下一个将没有机会被问到。我尝试了两个版本，但是它们都有缺陷。

Sample output:

Sisestage pikkus meetrides:
500
Sisestage uue uhiku kood (alj, ver, kyn, toll, jalg, jard, lii):
Sisestasite  vale vaartuse:500 void vale uhiku:

我的代码：

#include <iostream>
#include <iomanip>
#include <string>
#include <string.h>

using namespace std;

int main()
{

    float P;              /* Pikkus meetrites  */ /*Length P in metres*/
    string U;             /* M66du:hik*/ /* Unit of measure*/

    float ALJ;
    float VER;
    float KYN;
    float TOLL;
    float JALG;
    float JARD;
    float LII;

    do
    {
        cout<<"Sisestage pikkus meetrides: \n";  /*Ku:sin kasutajalt pikkust P*/ /* Asking       user for the length P in metres*/
        cin>>P;
        if (P > 0)
            cout<<"Sisestage uue uhiku kood (alj, ver, kyn, toll, jalg, jard, lii): \n"; /* Ku:sin         kasutajalt u:hiku koodi U*/ /* Asking user for the length U in metres*/
        getline(cin, U);
    } while (P > 0);
    cout << "Sisestasite  vale vaartuse:"<<P<< endl; /*Veateade*/
    ALJ = P / 5572;
    VER = P / 1066.781;
    KYN = P / 0.53;
    TOLL = P / 0.0254;
    JALG = P / 0.3048;
    JARD = P / 0.9144;
    LII = P / 500;


    if( U == "alj")
    {
        cout<< setprecision(2)<<fixed<< P <<"m = "<< ALJ << U <<"." ;
    }
    else if( U == "ver")
    {
        cout<< setprecision(2) << fixed << P <<" m ="<< VER << U <<".";
    }
    else if( U == "kyn")
    {
        cout<< setprecision(2) << fixed << P <<" m ="<< KYN << U <<".";
    }
    else if( U == "toll")
    {
        cout<< setprecision(2) << fixed << P <<" m ="<< TOLL << U <<".";
    }
    else if( U == "jalg")
    {
        cout<< setprecision(2) << fixed << P<<" m ="<< JALG << U <<".";
    }
    else if( U == "jard")
    {
        cout<< setprecision(2) << fixed << P <<" m ="<< JARD << U <<".";
    }
    else if( U == "lii")
    {
        cout<< setprecision(2) << fixed << P <<" m ="<< LII << U <<".";
    }


    getchar();
    getchar();

}

最佳答案

很难说出这种缩进是怎么回事，但是您的意思是将getline包含在if（）块中吗？也许您想念{}

 if (P > 0)
 cout<<"Sisestage uue uhiku kood (alj, ver, kyn, toll, jalg, jard, lii): \n"; /* Ku:sin         kasutajalt u:hiku koodi U*/ /* Asking user for the length U in metres*/
 getline(cin, U);

关于c++ - 我很难调试很长的编译时间并且需要多个用户输入，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/14633164/