我错过了什么?变量percent_始终等于0。我已经检查了nTimes和奖金,它们输入的值正确。即使我测试了一个简单的方程式(例如percent_ = 1 + 1),percent_也会给出0。有人可以帮忙吗?
#pragma once
#include <iostream>
#include <string>
#include <cstdlib>
#include <iomanip>
using namespace std;
class GuessMachine
{
private:
int nTimes;
int winnings;
string nM[6];
public:
GuessMachine();
void displayPrizes();
void displayMenu();
int getInput();
void checkNumber();
void checkPrize();
};
void GuessMachine::checkPrize()
{
MagicNumber mn;
int prize_=mn.generateNumber();
float percentage_;
percentage_ = float (winnings/nTimes*100); //<--On this line percentage is always 0 no matter what winnings and nTimes are
cout<<"Percentage is "<<percentage_<<endl;
if(percentage_ >= 50)
{
cout<<"You have scored "<<percentage_<<"% and won "<<nM[prize_];
}
else
{
cout<<"You have scored "<<percentage_<<"%. You lose!!";
}
cin.ignore();
cin.ignore();
}
最佳答案
尝试
float (winnings) /nTimes*100
代替。
您的版本仍将
int
-0
转换为浮点数。如果
/
的一个操作数是浮点数,它将起作用。关于c++ - 无法计算方程式,始终为零,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/12880912/