Question

C ++初学者在这里。因此，我正在尝试使此代码功能像最终成绩计算器一样，但无法正常工作。每次返回100。怎么了？

#include <iostream>

using namespace std;

int main()
{
    double grade, des, worth, per, grade1, tgrade, fgrade;
    cout<<"What is your current grade in the class?"<<endl;
    cin>>grade;
    cout<<"What is your desired grade in the class?"<<endl;
    cin>>des;
    cout<<"How much is your final exam worth? (Percent of total grade)"<<endl;
    cin>>worth;
    per=1-(worth/100);
    grade1=grade*per;
    fgrade=100;
    while ((tgrade-0.01)<=des<=(tgrade+0.01)) {
        fgrade=fgrade-1;
        tgrade=grade1+(fgrade*(worth/100));
    }    
    cout<<"You need a grade of "<<fgrade<<"% on your final exam to reach your desired grade in your class. Good Luck!"<<endl;
    return 0;
}

Answer 1

我可以看到您想要在循环条件下实现的逻辑，但是<=是 binary 运算符，因此您需要具有两个与&&结合的条件。

Table A: 
Id & EmployerName

Table B:
Id, Employeename & EmployerID

我正在尝试制作决赛成绩计算器，但无法正常工作

1 个答案: