Need help with RPG, calling functions

[facebookisgayyy]

What I have so far is two rooms, A and B and each room has it's own function.. how am I supposed to make it so the rooms can be called amongst eachother so the player can navigate, without getting this error:

In function 'voidA()'
'B' undeclared (first use this function)
In function 'void B()'
'void B()' used prior to declaration

#include<iostream>
#include<windows.h>
using namespace std;

    char buffer;
    bool skeleton = true;
    bool rat = true;
    bool Ckey = false;
    bool Ekey = false;
    bool boss = true;
    int a, b;

void A()
{
    system("CLS");
    cout << "This is the spawn room " << endl;
    cout << "Possible exits are E and N " << endl;
    cin  >> buffer;
    
    if(buffer == 'E' || buffer == 'e')
    {
        B();
    }
    
    if(buffer == 'N' || buffer == 'n')
    {
        if(Ckey == false)
        {
            system("CLS");
            cout << "The door is locked" << endl;
            system("PAUSE");
            A();
         }
    }
}        

void B()
{
    srand(time(0));
    
    if(rat == true)
{
        system("CLS");
        cout << "This is just some room... " << endl;
        Sleep(3000);
        system("CLS");
        cout << "..." << endl;
        Sleep(2000);
        cout << "A rat attacks you! " << endl;
        cout << "You have a 90% chance to win. " << endl << endl;
        system("PAUSE");
        
        a = rand()%100;
        
        if(a > 9)
        {
            rat = false;
            B();
        }
        else if(a < 9)
        {
            Ckey = true;
            rat = true;
            system("CLS");
            cout << "You defeated the rat!" << endl;
            cout << "The rat was carrying a key!" << endl;
            B();
        }
}

    else if(rat == false)
    {
        system("CLS");
        cout << "This is the room you fought the rat in " << endl;
        cout << "Not much else is in here..." << endl;
        cout << "Only exit is W" << endl;
        cin  >> buffer;
        
        if(buffer == 'W' || buffer == 'w')
        {
            A();
        }
    }
}
            
int main()
{
    A();
    system("PAUSE");
    return 0;
}

[ui uiho]

get rid of ALL the system functions. second, this is a perfect example of why there is a standard in c++ for declaring functions. the standard is this and will fix your problem.

#include <iostream>

int addition(int i, int j);//declare functions and formal arguments here
int subraction(int i, int j);

int main(){
    std::cout << addition(7,3);
    std::cout << '\n' << subraction(4, 2);
    return 0;
}
//code for what the function does here. 
int addition(int i, int j){
    return i+j; 
}
int subraction(int i, int j){
    return i-j; 
}

also a tip, try not to name variables THIS close to your functions. int a, b;

[ErrorCode404]

Hey, just try declaring your variables as prototypes before you call them.
All i did was move a couple things around and your program worked just fine.

#include<iostream>
#include<windows.h>
using namespace std;

void A();
void B();

    char buffer;
    bool skeleton = true;
    bool rat = true;
    bool Ckey = false;
    bool Ekey = false;
    bool boss = true;
    int a, b;
            
int main()
{
    A();
    system("pause");
    return 0;
}

void A()
{
    system("cls");
    cout << "This is the spawn room " << endl;
    cout << "Possible exits are E and N " << endl;
    cin  >> buffer;
    
    if(buffer == 'E' || buffer == 'e')
    {
        B();
    }
    
    if(buffer == 'N' || buffer == 'n')
    {
        if(Ckey == false)
        {
            system("cls");
            cout << "The door is locked" << endl;
            system("pause");
            A();
         }
    }
}        

void B()
{
    srand(time(0));
    
    if(rat == true)
    {
        system("cls");
        cout << "This is just some room... " << endl;
        Sleep(3000);
        system("cls");
        cout << "..." << endl;
        Sleep(2000);
        cout << "A rat attacks you! " << endl;
        cout << "You have a 90% chance to win. " << endl << endl;
        system("pause");
        
        a = rand()%100;
        
        if(a > 9)
        {
            rat = false;
            B();
        }
        else if(a < 9)
        {
            Ckey = true;
            rat = true;
            system("cls");
            cout << "You defeated the rat!" << endl;
            cout << "The rat was carrying a key!" << endl;
            B();
        }
    }

    else if(rat == false)
    {
        system("cls");
        cout << "This is the room you fought the rat in " << endl;
        cout << "Not much else is in here..." << endl;
        cout << "Only exit is W" << endl;
        cin  >> buffer;
        
        if(buffer == 'W' || buffer == 'w')
        {
            A();
        }
    }
}

[ui uiho]

  int a, b;

void A()
{

try to name your functions and variables better. DO NOT USE GLOBAL VARIABLES, and DO NOT USE SYSTEM COMMANDS.
try reworking this mess

system("cls");
        cout << "This is just some room... " << endl;
        Sleep(3000);
        system("cls");
        cout << "..." << endl;
        Sleep(2000);
        cout << "A rat attacks you! " << endl;
        cout << "You have a 90% chance to win. " << endl << endl;
        system("pause");

and all your other system commands.

[Need4Sleep]

If you're using windows, heres a handy clear screen function that clears the screen without using system commands:

void cls() //windows h function to replace screen with nulls
{
  DWORD n;
  DWORD size;
  COORD coord = {0};
  CONSOLE_SCREEN_BUFFER_INFO csbi;
  HANDLE h = GetStdHandle ( STD_OUTPUT_HANDLE );
  GetConsoleScreenBufferInfo ( h, &csbi );
  size = csbi.dwSize.X * csbi.dwSize.Y;
  FillConsoleOutputCharacter ( h, TEXT ( ' ' ), size, coord, &n );
  GetConsoleScreenBufferInfo ( h, &csbi );
  FillConsoleOutputAttribute ( h, csbi.wAttributes, size, coord, &n );
  SetConsoleCursorPosition ( h, coord );
}

as for your system pause, use cin.get() or simply cin to pause for the user.

[ui uiho]

remember the sleep function should also be remade.