Loop inside a switch

[DeadH34d]

Hello all, I'm trying to make a switch case that repeats itself if it ends with default.

i.e.

case 1:
/*condition*/
break;
case 2:
/*condition*/
break;
default:
/*Some kind of loop to allow user to enter another choice.*/
break;

I'm probably missing something simple here. I'm trying to teach myself C++ cause school is too expensive.

Thanks in advance for any and all help.

[screw]

Hi!


You should use a loop. While, do loop.
http://bytes.com/serversidescripting/c++/tutorials/c++andloops/index.html

like this:

...
int main()
{
 int opt = 0;
 do
 {
   cout << "Enter your choice:";
   cin >> opt;
   switch(opt)
   {
    ...
   }
 }
  while (opt != 0); // stopping condition



 return;
}

...

I don't know it is free or not:

http://www.mediafire.com/?od11hmjdvwd

(teachyourselfcplusplusin21days) This book has 700 pages.

[bluezor]

Hi, I don't know if you mean something like this but it works for me :

#include <iostream>

int main()
{
    int num1 = 0;
    bool repeat_switch = true;

    while(repeat_switch != false)
    {
        std::cout << "Enter an integer between 1 - 5." << std::endl;
        std::cin >> num1;

        switch(num1)
        {
            case 1:
            std::cout << "You entered 1!" << std::endl;
            repeat_switch = false;
             break;

            //..... case 2 - 5

            default:
            std::cout << "Invalid input, enter a number 1 - 5 again." << std::endl;
             break;
        }
        //if the number isn't 1 - 5 then the condition for the loop (repeat_switch) will always be     
        //true  and therefore the switch will keep repeating itself. If it is, it'll turn false and the 
       //while(...) will end
    }

    return(0);
}

You can edit the cin >> to filter out results (see: firedraco's link) , but I just did it quickly.

[firedraco]

That will mostly work fine. Read this for more info:
http://www.cplusplus.com/forum/articles/6046/

Also, returning from main is GOOD practice. Please keep doing it.

[DeadH34d]

Thank you all for responding. Sorry I'm a little slow on returning. I'm making a Pick Your Own Adventure game, which is what I need the loop solution for. Anyone care to have a look at it so far?

[firedraco]

Sure, I wouldn't mind (although I might have to do this tommorow, it's quite late (like after midnight late) for me. XD

[DeadH34d]

Awesome. It will be nice to have some feedback. There is some bad language and some very dry humor, just warn you all. Sorry if the code is messy; again, self taught.

#include <iostream>
#include <stdlib.h>
#include <string>

using namespace std;

string name;/* The player's name.*/

int main(int argc, char *argv[])
{
 int choice; /*The choice for each scenario.*/
 
  cout << "Hey. Yes you. It's a black screen and you." << endl;
  cout << "Who else would I possibly talking to?" << endl;
  cout << "Anyway, what is your name? " ;
  cin >> name;
  
  cout << endl;/*Blank line. Need to find better method.*/
  
  cout << name << " huh? " << endl;
  cout << "Well let's get started " << name << "." << endl; 
  
  cout << endl;
/*Question 1*/
  cout << "You are in a dimly lit room." << endl;
  cout << "You look around a notice doors on either side of you." << endl;
  cout << "Which one do you pick?" << endl; 
  cout << "1) Door on the left." << endl;
  cout << "2) Door on the right." << endl;
  cout << "Enter a choice: ";
  cin >> choice;
  
  cout << endl;
  
  switch (choice) {
   case 1:/*Correct choice to Question 1. Leads to Question 2.*/
    cout << "The door leads to a hallway, with the same poor lighting." << endl;
    cout << "You reach the end of the hallway and come to a door." << endl;
/*Question 2*/
    cout << "You open the door, and on the other side is a room with a guard." << endl;
    cout << "What do you do?" << endl;
    cout << "1) Run in and beat him over the head." << endl;
    cout << "2) Sneak up and snap his neck like a twig." << endl;
    cout << "Enter a choice: ";
    cin >> choice;
                    
    cout << endl;
                    
     switch (choice) {
     case 1:/*Incorrect choice to Question 2.*/
      cout << "The guard hears you running and screaming like an idiot..." << endl;
      cout << "...He impales you. You died. Good job." << endl;
      break;
     case 2:/*Correct choice to Question 2. Leads to Question 3.*/
      cout << "You sneak up quietly and say (insert cliche remark) before snapping his neck." << endl;
/*Question 3*/
      cout << "You take the gaurd's sword. You have a feeling you'll need it." << endl;
      cout << "You hear strange noises down a corridor at the end of the room." << endl;
      cout << "At the other end of the room is a window you can climb out of and escape." << endl;
      cout << "So, where do you go from here?" << endl;
      cout << "1)Jump out the window. Screw this place. There's better adventures elsewhere." << endl;
      cout << "2)Well any good adventurer investigates the noises right?" << endl;
      cout << "You know how this works by now. ";
      cin >> choice;
      cout << endl;
      switch (choice) {
      case 1:/*Incorrect choice to Question 3.*/
       cout << "You jump out the window and land right safely on the ground." << endl;
       cout << "Unfortunately for you, there are six guards practicing their archery." << endl;
       cout << "You get filled full of arrows. They try to bury you later but you're" << endl;
       cout << "stuck to that tree something awful." << endl;
       break;
      case 2:/*Correct choice to Question 3. Leads to Question 4.*/
       cout << "You head towards the corridor to see what's going on." << endl;
       cout << "You walk for what feels like hours." << endl;
       break;
      default:
       cout << "How about a choice that we can actually use, huh?" << endl;
       break;
       } 
      break;
     default:
      cout << "1 or 2 stupid." << endl;
      break;
      }
      break;
     case 2:/*Incorrect choice to Question 1.*/
      cout << "The door leads to a well-lit feast hall." << endl;
      cout << "You take one step into the room and...fall down a pit full of ravenous" << endl;
      cout << "squirells." << endl;
      cout << "Good job stupid. You killed yourself already." << endl;
      cout << "Now you'll never get the cookies at the end." << endl;
      break;
     default:
      cout << "Hey dumbass, You only have to type 1 or 2." << endl;
      cout << "Is it really that damn hard?" << endl;
      break;
           
  }                               
  system("PAUSE");	
  return 0;
}

[R0mai]

Don't use endl for creating new line as it's flushes the stream, use '\n' instead and use endl only once/output.

[DeadH34d]

Ah, thanks. I'll clean up now. All the endls were bugging me. I new there was a better way. What did you think of the actual game?

[firedraco]

Heh, not bad. Some other things I noticed were:

1.) You could move name into main since you don't need it to be global.
2.) Check that article I mentioned to make sure your program doesn't break if someone enters invalid input
3.) Don't use system(), read here for more info: http://www.cplusplus.com/forum/articles/11153/

[DeadH34d]

Thanks again firedraco. I have music composed too, but I'm saving that until the program is actually where I want it in terms of being done. Did you happen to find any grammatical/spelling errors? Any jokes to cheesy?

edit: screw, thanks for the link to that ebook. it was free, and it looks fantastic.