Thread: Stuck on tutorial number 5 (basics): switch cases

http://www.cprogramming.com/tutorial/lesson5.html

Right at the bottom, it says

...you can make a loop around the whole thing to have it wait for valid input.

How would I go about doing this? I suppose the do..while loop would be best, so I tried that and here's my best shot (it doesn't work):

Code:

#include <iostream>

using namespace std;

void playgame()
{
    cout << "Play game called";
}
void loadgame()
{
    cout << "Load game called";
}
void playmultiplayer()
{
    cout << "Play multiplayer game called";
}

int main()
{
  int input;
do {
  cout<<"1. Play game\n";
  cout<<"2. Load game\n";
  cout<<"3. Play multiplayer\n";
  cout<<"4. Exit\n";
  cout<<"Selection: ";
  cin>> input;
  switch ( input ) {
  case 1:            // Note the colon, not a semicolon
    playgame();
    break;
  case 2:            // Note the colon, not a semicolon
    loadgame();
    break;
  case 3:            // Note the colon, not a semicolon
    playmultiplayer();
    break;
  case 4:            // Note the colon, not a semicolon
    cout<<"Thank you for playing!\n";
    break;
  }
} while (input=0);
  cin.get();
}

Thanks for all responses... I'm very new and learning the basics so please be kind!

Code:

while (input=0);

= assigns. == compares.

It's your loop condition. Better make it:

Code:

} while (input != 4);

EDIT: And get a "cin.ignore();" before "cin.get();" if you want the program to wait for enter. ( "cin >> input;" has left the newline character behind )

Then:

Code:

} while (input >= 1 && input <= 4);

Originally Posted by Sipher

Then:

Code:

} while (input >= 1 && input <= 4);

That makes it so I do the loop when I input a correct value. My aim is for the program to shut down if it's correct, but ask again if an incorrect value is given, until a correct value is entered.

I tried

Code:

} while (input < 1 && input > 4);

but it still doesn't work properly, it shuts down whatever value I enter.

EDIT:

Code:

} while (input < 1 || input > 4);

has done the trick, thanks for everyone's help!