how to pass vectors through functions

[m0bb1n]

Hello,

I was wondering how I can pass vectors. I am just finished my first hangman game and wanted to fine tune it. As you can see, I declared 3 global vectors.

#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <cstdlib>
#include <ctime>

using namespace std;

vector<char> board;
vector<string> body (6);
vector<char> wrongChar (6);

How can I pass it through functions? Full program is below and any criticism is appreciated. Thanks in advance!

#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <cstdlib>
#include <ctime>

using namespace std;

vector<char> board;
vector<string> body (6);
vector<char> wrongChar (6);
int correct=-1;
void menu();

string wordSelect()
{
    string wordBank[10]={"campaign","idiom","converse","ignorance","manufacture","document","individual","literate","assistance","execution"};
    string word;
    srand(time(0));
    int rD=rand()%(10+1)+0;
    word=wordBank[rD];
    return word;
}

void pressEnter(string conWord)
{
    cout << string(3,'\n'); // MAKES SCREEN CLEANER AND MORE READABLE
    cout << "Press 'Enter' to " << conWord << "." << endl;  //conWord is the action
    cin.get(); //TAKES USER'S INPUT
    system("clear"); //CLEARS SCREEN
}

void help()
{
    system("clear");
    cout << "**********" << endl;
    cout << "***Help***" << endl;
    cout << "**********" << endl;
    string(3,'\n');

    cout << "\t WHERE U PUT THE FUCKING RULES" << endl;
    cin.ignore();
    pressEnter("go back to menu");
}
void promptLose(string word)
{
    system("clear");
    cin.ignore();
    cout << "Sorry... You died because of your stupidity!  The word was " << word << "!" << endl;
    pressEnter("go back to menu");
}

void promptWin()
{
    cout << string(3, '\n');
    cout << "Congrats!  You got the word so you didn't die!" << endl;
    pressEnter("go back to menu");
}

char setBoard(int length)
{
    for(int i=0; i<6; i++)
    {
        wrongChar[i]=' ';
    }

    board.resize(length);
    for(int i=0; i<board.size(); i++)
    {
        board[i]='_';
    }
    for(int i=0; i<body.size(); i++)
    {
        body[i]=' ';
    }
}

void printBoard(int incorrect)
{
    if (incorrect>0)
    {
        if (incorrect==1)
        {
            body[0]="0";
        }
        if (incorrect==2)
        {
            body[1]="|";
        }
        if (incorrect==3)
        {
            body[2]="/";
        }
        if (incorrect==4)
        {
            body[3]="\b\\ ";
        }
        if (incorrect==5)
        {
            body[4]="/";
        }
        if (incorrect==6)
        {
            body[5]="\\";
        }
    }
    system("clear");
    cout << "\t " << "|========||" << endl;
    cout << "\t " << "|        ||" << endl;
    cout << "\t " << body[0] << "        ||" << endl;
    cout << "\t" << body[2] << "";
    cout << body[1] << " ";
    cout << body[3] << "      ||" << endl;
    cout << "\t" << body[4] << " ";
    cout << body[5] << "       ||" << endl;
    cout << "\t" <<"          ||" << endl;
    cout << "\t" <<"     =========" << endl;

    cout << endl;

    for(int i=0; i<board.size(); i++)
    {
        cout << board[i];
        cout << " ";
    }
    cout << endl;
    cout << endl;
    cout << "Incorrect Letters" << endl;
    cout << "___________________" << endl;
    cout << "| "<< wrongChar[0] <<"| "<< wrongChar[1] <<"| "<< wrongChar[2] <<"| "<< wrongChar[3] <<"| "<< wrongChar[4] <<"| "<<wrongChar[5]<<"| "<< endl;
    cout << "-------------------" << endl;
}

int replaceChar(string word,char guess,int tempCorrect,int incorrect)
{
    int numLetter=0;
    int length=word.length();
    vector <char> guessRep (length);
    for(int i=0; i<length; i++)
    {
        if (word[i]==guess)
        {
            numLetter++;
            board[i]=guess;
        }
    }
    if (numLetter==1)
    {
        cout << "There is " << numLetter << " " << guess << "!" << endl;
        tempCorrect++;
        correct=0;
    }
    if (numLetter==0)
    {
        cout << "There are no " << guess << "'s!" << endl;
        correct=1;
        if (incorrect<=6)
        {
        wrongChar[incorrect]=guess;
        }
    }
    if (numLetter>=2)
    {
        cout << "There are " << numLetter << " " << guess << "'s!" << endl;
        tempCorrect=tempCorrect+numLetter;
    }
    cin.ignore();
    pressEnter("continue");
    return tempCorrect;
}

int playGame()
{
    char guess;
    string word=wordSelect();
    int length=word.length();
    int tempCorrect=0;
    int incorrect=0;
    int counter=-1;
    setBoard(length);

    while(true)
    {
        printBoard(incorrect);
        cout << "Guess: ";
        cin >> guess;
        tempCorrect=replaceChar(word,guess,tempCorrect,incorrect);
        if (correct==1)
        {
        incorrect++;
        }

        if(tempCorrect==length)
        {
            promptWin();
            break;
        }
        if(incorrect==6)
        {
            promptLose(word);
            break;
        }
    }

    if(tempCorrect>length || tempCorrect<0)
    {
        cout << "Uh Oh..." << endl;
        cout << "~~~~~~~~" << endl;
        cout << "The program came across a problem." << endl;
        cout <<"Exiting...";
        cout << "tempCorrect: " << tempCorrect << endl;
        cout << "---------------" << endl;
        cout << "incorrect: " << incorrect << endl;
        cout << "---------------" << endl;
        exit(0);
    }

}

void menu()
{
    int tempChoice;

    cout << "**************" << endl;
    cout << "*****MENU*****" << endl;
    cout << "**************" << endl;
    string(3,'\n');

    cout << "\t 1) Play" << endl;
    cout << "\t 2) Help" << endl;
    cout << "\t 3) Exit" << endl;
    cin >> tempChoice;

    if(tempChoice==1)
    {
        playGame();
    }

    if(tempChoice==2)
    {
        help();
    }

    if(tempChoice==3)
    {
        exit(0);
    }
    system("clear");
}

int main()
{
    cout << "#####################" << endl;
    cout << "#*******************#" << endl;
    cout << "#******Hangman******#" << endl;
    cout << "#*******************#" << endl;
    cout << "#####################" << endl;
    pressEnter("continue");

    while(true)
    {
        menu();
    }
    return 0;
}

[Moschops]

Same way you pass any variable to a function. I see you passing some variables already. Like that. If you want the function to have a copy of the vector, exactly the same. If you want the function not to have a copy, but to work on the original, pass by reference ( http://www.learncpp.com/cpp-tutorial/73-passing-arguments-by-reference/ )

exit(0); This is awful. Don't do this. End your program by returning from main.

[m0bb1n]

Same way you pass any variable to a function. I see you passing some variables already. Like that. If you want the function to have a copy of the vector, exactly the same. If you want the function not to have a copy, but to work on the original, pass by reference ( http://www.learncpp.com/cpp-tutorial/73-passing-arguments-by-reference/ )

exit(0); This is awful. Don't do this. End your program by returning from main.

Thank you for your response. Can you tell me why it's bad to use exit();? When would be an acceptable time to use it?

Thanks again.