Question

I’m testing my roulette classes but visual studio don’t let me see the output since cin.ignore() does not work, and I have no idea what going on here,

can you explain why my cmd line window disapear and why cin.ignore() in this code never gets invoked?

Thank you so much!

#include "Bet.h"
#include "Table.h"
#include <iostream>

using namespace std;
using namespace Roulette;


int main()
{
    cout << "Enter numbers for Split bet:" << endl;
    short answer;
    vector<short>* Selection = new vector<short>;
    for (short i = 0; i < 2; ++i)
    {
        cin >> answer;
        Selection->push_back(answer);
    }

    cout << "Enter how many chips and chip worth:" << endl;
    short chips, worth;
    cin >> chips >> worth;

    Bet* MyBet = new Bet(TableLayout::European, BetName::Split, chips, worth, Selection);

    Bet* Complex = new Bet(TableLayout::European, BetName::VoisinsDeZero, 1, 1);

    Complex->PrintProperties();

    cin.ignore(); // THIS IS IGNORED!!! WHY??? please...

    delete Selection;
    Selection = nullptr;
    delete Complex;
    delete MyBet;
    return 0;
}

EDIT:

I press F5 to run a program and then type in the numbers as follows:

1 enter
2 enter
1 enter
1 enter

and here cmd goes away, program skips cin.get() ( or cin.ignore() ) whatever it doesn’t work.

Answer 1

cin >> chips >> worth;

On this line, for example, if you type the last 1 and press enter, A \n is still left in the stream unread.

When you do cin.ignore();, it extracts the leftover character and the program finishes. Change cin.ignore(); to cin.ignore(2); and it should work.