Paper Scissors Rock not counting Wins

[Magic681]

Hey guys, so I'm trying to make a Paper, scissors, rock program (where you play against the computer). And i got pretty far, to the point where it seemed finished. But then i realized that i need to make the program exit itself after the player wins three times.

So i tried using a Do and While loop, but its not working.
Heres the main code...

/*
This is a simple Paper, Scissors, Rock program. 
You press 1, 2 or 3 to select your choice and 
once you win three times, the program closes.
*/
#include "Assignment4.h"
using namespace std;
int main()
{
    srand ( time(NULL) );
    int choice;
    int compchoice = (rand()%2)+1;
    int winCount = 0;

    //Creating the interface
    cout << "Welcome to the Rock, Paper, Scissors game." << endl;
    cout << " 1 = Rock, 2 = Paper, 3 = Scissor, 4 = Exit Program" << endl;
    cin >> choice;

    do
    {
        if (choice == 1) 
        {
            if (compchoice == 0)
            cout << "It's a tie!\n\n\n\n";
            else if (compchoice == 1)
            cout << "Paper beats rock! Sorry, you lose!\n\n\n\n";
            else if (compchoice == 2)
            {
                cout << "Rock beats scissors! You win!\n\n\n\n";
                winCount += 1;
            }
        }

        if (choice == 2)
        {
            if (compchoice == 0)
            cout << "It's a tie!\n\n\n\n";
            else if (compchoice == 1)
            {
                cout << "Paper beats rock! You win!\n\n\n\n";
                winCount += 1;
            }
            else if (compchoice == 2)
            cout << "Scissors beat paper! Sorry, you lose!\n\n\n\n";
        }

        if (choice == 3)
        {
            if (compchoice == 0)
            cout << "It's a tie!\n\n\n\n";
            else if (compchoice == 1)
            {
                cout << "Scissors beat paper! You win!\n\n\n\n";
                winCount += 1;
            }
            else if (compchoice == 2)
            cout << "Rock beats scissors! Sorry, you lose!\n\n\n\n";
        }
        if (choice == 4)
        {
            return 0;
        }

        return main();
    }

    while (winCount >= 3);
    {
        cout << "You won three times!" << endl;
        //return 0;

    }
    //return main();
}

These last few lines, after the While statement, is where the problem occurs; i thought it had something to do with my placement of the return main(); but whereever i place it, the program either exits the moment the computer (or the player) wins, or it doesnt actually exit at all and acts as if i never placed the loop (pressing 4 will still close it, however).

I'm pretty sure im missing something with this While function...can someone point me to where?

[nullptr]

In line 65 you've got return main(), that's part of the problem. You should never recursively call the entry point of a program.

The do/while loop should look like:

do
{
    // calculate compchoice
    // cin >> choice
    // process data

} while (winCount < 3);

After that you'd display the win message, pause execution of the program so the message can be read and finally return 0;

[nullptr]

For compchoice you want values of 0 to 2 inclusive. At present you have compchoice = (rand()%2)+1;
meaning compchoice will either be 1 or 2.

Change it to compchoice = rand() % 3;

[Magic681]

Okay...but now it loops infinitely if you lose to the computer.

Also...if i win, once, the message suddenly displays three times, in a row, then prompts me to press any key, of which it will then exit. Something tells me i'm on the wrong track...?

The lines i changed are now;

while (winCount < 3);
cout << "you won three times" << endl;

return 0;

[nullptr]

Can you post the complete code you now have? What do you want to happen if you lose to the computer?

[Magic681]

Uh, okay, nothing much has changed.

/*#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>*/
/*
This is a simple Paper, Scissors, Rock program. 
You press 1, 2 or 3 to select your choice and 
once you win three times, the program closes.
*/
#include "Assignment4.h"
using namespace std;
int main()
{
    srand ( time(NULL) );
    int choice;
    int compchoice = (rand()%2)+1;
    int winCount = 0;

    //Creating the interface
    cout << "Welcome to the Rock, Paper, Scissors game." << endl;
    cout << " 1 = Rock, 2 = Paper, 3 = Scissor, 4 = Exit Program" << endl;
    cin >> choice;

    do
    {
        if (choice == 1) 
        {
            if (compchoice == 0)
            cout << "It's a tie!\n\n\n\n";
            else if (compchoice == 1)
            cout << "Paper beats rock! Sorry, you lose!\n\n\n\n";
            else if (compchoice == 2)
            {
                cout << "Rock beats scissors! You win!\n\n\n\n";
                winCount += 1;
            }
        }

        if (choice == 2)
        {
            if (compchoice == 0)
            cout << "It's a tie!\n\n\n\n";
            else if (compchoice == 1)
            {
                cout << "Paper beats rock! You win!\n\n\n\n";
                winCount += 1;
            }
            else if (compchoice == 2)
            cout << "Scissors beat paper! Sorry, you lose!\n\n\n\n";
        }

        if (choice == 3)
        {
            if (compchoice == 0)
            cout << "It's a tie!\n\n\n\n";
            else if (compchoice == 1)
            {
                cout << "Scissors beat paper! You win!\n\n\n\n";
                winCount += 1;
            }
            else if (compchoice == 2)
            cout << "Rock beats scissors! Sorry, you lose!\n\n\n\n";
        }
        if (choice == 4)
        {
            return 0;
        }


    }

    while (winCount < 3);
    cout << "you won three times" << endl;

    return 0;
    //return main();
}

If computer wins, you must try again to beat the computer.

If you win three times (doesnt have to be consecutive), the game displays a message stating "You've won" and exits the program by pressing any key

Also...Im no longer a newbie! So to show my epicness, gonna have to not delete the message that was in the text field.

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[nullptr]

This should work for you. Note that you have only 3 choices so there's no need for
else if (compchoice == 2). As it's the only remaining condition, you can simply have else

int main()
{
    srand ( time(NULL) );
    int choice;
    int compchoice;
    int winCount = 0;

    //Creating the interface
    cout << "Welcome to the Rock, Paper, Scissors game." << endl;

    do
    {
        cout << " 1 = Rock, 2 = Paper, 3 = Scissor, 4 = Exit Program" << endl;

        compchoice = rand() % 3;
        cin >> choice;
        // flush input stream
        cin.ignore(90, '\n');

        if (choice == 1) 
        {
            if (compchoice == 0)
                cout << "It's a tie!\n\n\n\n";
            else if (compchoice == 1)
                cout << "Paper beats rock! Sorry, you lose!\n\n\n\n";
            else //if (compchoice == 2)
            {
                cout << "Rock beats scissors! You win!\n\n\n\n";
                winCount += 1;
            }
        }

        if (choice == 2)
        {
            if (compchoice == 0)
                cout << "It's a tie!\n\n\n\n";
            else if (compchoice == 1)
            {
                cout << "Paper beats rock! You win!\n\n\n\n";
                winCount += 1;
            }
            else //if (compchoice == 2)
                cout << "Scissors beat paper! Sorry, you lose!\n\n\n\n";
        }

        if (choice == 3)
        {
            if (compchoice == 0)
                cout << "It's a tie!\n\n\n\n";
            else if (compchoice == 1)
            {
                cout << "Scissors beat paper! You win!\n\n\n\n";
                winCount += 1;
            }
            else //if (compchoice == 2)
                cout << "Rock beats scissors! Sorry, you lose!\n\n\n\n";
        }

        if (choice == 4)
        {
            return 0;
        }

    } while (winCount < 3);

    cout << "You won three times" << endl;
    cout << "press Enter to exit...";

    cin.get();

    return 0;
}

[Magic681]

Oh my god, this is perfect!
Theres a few things i dont understand, mostly that cin.ignore(90, '\n'); thing, but damn i hadnt realized the problem lay in the base Do loop.

Thanks so much man, been stuck on that one thing for ages.