Question

This code accepts input for student identification and their current balances. -999 is typed as the A-Number to break the loop or it will run until 30 students have been entered.

My for loop at the bottom of the program is supposed to list the entered A-Number, Student Name, and their Balance in opposite order that it is inputted. Nothing is being listed though. Just the header of A-Number:, Student:, and Balance:

I know there is a simple explanation but I just can’t think and I’m hoping someone can point it out for me…

#include <iostream>
#include <string>
#include <iomanip>
using namespace std;

int main(){
    const int maxStudents = 30;
    struct Students{
        string studentName;
        int aNumber;
        double outstandingBalance;};

    Students students[maxStudents];

    int count = 0;
    for( ; count < maxStudents-1; count++)
    {
        cout<<"\nA-Number:";
        cin>>students[count].aNumber;
        if(students[count].aNumber == -999)
                break;
            cout<<"Student Name:";
            cin.ignore();
            getline(cin,students[count].studentName);
            cout<<"\nOutstanding Balance:";
            cin>>students[count].outstandingBalance;
    }

    cout<<setw(20)<<"\nA-Number "<<"Name "<<"Balance ";

    for( ; count >= maxStudents-1; count--)
        cout<<setw(20)<<students[count].aNumber<<" "<<students[count].studentName<<" "<<students[count].outstandingBalance<<endl;

    system("pause");
    return 0;
}

Answer 1

Your second loop never runs because count is already too small (count == maxStudents - 1 if the loop ran all the way through, so you might get one pass). Your loop condition needs to be count >= 0.