about recursion...

This is a discussion on about recursion... within the C++ Programming forums, part of the General Programming Boards category; Code: void PlayerRemove(int &totalstones) /* remove a stone between 1-3 and check to make sure value of total is not ...

  1. #1
    Unregistered
    Guest

    about recursion...

    Code:
    void PlayerRemove(int &totalstones)
    /* remove a stone between 1-3 and check to make sure value of total is not 0 */
    {
    	int playerstones;
    	cin>>playerstones;
    
    	if ((playerstones>3)||(playerstones<1))
    	{
    		cout<<"Value must be between 1 and 3"<<endl;
    		cout<<"How many would you like? ";
    		PlayerRemove(totalstones);
    	}
    
    	if ((totalstones-playerstones)<=0)
    	{
    		cout<<"Value must be between 1 and "<<totalstones<<endl;
    		cout<<"How many would you like? ";
    		PlayerRemove(totalstones);
    	}
    	totalstones=totalstones-playerstones;//here is the problem i only want it to do the subtraction if the number is between 1-3
    }
    how does recursion work? does it finish the whole function or start a new one where it left off? and how should i change this so it wont subtract from total if the number is not between 1-3

  2. #2
    Registered User
    Join Date
    Jan 2002
    Posts
    11
    Eh, I don't think what you're trying to do should be done with recursion.

    Recursion calls the same function with a different value (HOPEFULLY THERE'S AN EXIT CONDITION SOMEWHERE), and will finish up the rest of the function after the recursive call after the 'other' functions have executed.

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