Thread: Menu program help

I am trying to write a menu program that will be broken down into a series of calls to function for each of the menu items. Two of the menu items will be simple programs which I wrote.

I want two of the functions to run one of the two programs I am trying to include as items in the menu.

So far I am only familiar with variables, loops, if statements, and I just learned how to write functions.

The problem I am have is that I don't quite understand how to write a function that will run one of the two programs. Also I am having a hard time writing the program in away that would allow the user to select the menu items.

Could some please help me figure this out.

Code:

#include <iostream>

using namespace std;

int beer_on_the_wall()
{int i=100;
    while( i <100 && i >=0)
    {
        cout << "Bottles of beer on the wall.";
        i--;
    }
}

int calculate()
{
    int arg1;
    int arg2;

    cout <<"input argument one";
    cin >> arg1;
    cout <<"input argument two";
    cin >> arg2;

    cout << arg1 << "*" << arg2 << "=" << arg1*arg2 << endl;
    cout << arg1 << "+" << arg2 << "=" << arg1+arg2 << endl;
    cout << arg1 << "-" << arg2 << "=" << arg1-arg2 << endl;
}

void Exit()
{}

int main ()
{
    int input;

    cout << "1. Play beer\n";
    cout << "2. load calculator\n";
    cout << "3. Exit\n";
    cout << "Selection: ";
    cin >> input;
    switch ( input )
    {
    case 1:            // Note the colon after each case, not a semicolon
  beer_on_the_wall();
  break;
    case 2:
  calculate();
  break;
    case 3:
  Exit();
  cout <<"Good Bye\n";
  break;

    default:            // Note the colon for default, not a semicolon
  cout << "Error, bad input, quitting\n";
  break;
    }

Code:

Code:

simplemenu.cpp

This while loop will never run.

Code:

int beer_on_the_wall()
{int i=100;
    while( i <100 && i >=0)
    {
        cout << "Bottles of beer on the wall.";
        i--;
    }
}

You declare your counter as 100 and ask the while loop to only run if the counter is less than 100.

Format the code in your main function much better

If you need to write a function to handle the menu part of it you can move your code in main into a function and then have main call that function.