Question about compilicated If Then's

This is a discussion on Question about compilicated If Then's within the C++ Programming forums, part of the General Programming Boards category; I am trying to do a text adventure game but I am having a problem. I can't seem to get ...

  1. #1
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    Question Question about compilicated If Then's

    I am trying to do a text adventure game but I am having a problem. I can't seem to get my if thens to take text like North. Let me show you what I mean.

    Code:
    #include <iostream.h>
    int main();
    {
        int directions;
    cout<<"What do you want to do?";
    cin>>directions;
    if (directions==north)
    {
       whatever
    }
    I think that made sense...but someone please tell me how to make it so my if thens let me enter text for the conditon...anyone?

  2. #2
    Registered User fletch's Avatar
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    In the code that you included above, you declared the variable 'directions' as an integer. When the compiler reaches the expression (directions == north), it's probably going to be looking for a variable called north (which doesn't exist).
    For text such as "north" you need to use strings. For selecting from a list of options, I'd suggest that you use a single character for each option e.g. 'N' for north. Also, have you considered using a switch vice nested if...then statements?
    "Logic is the art of going wrong with confidence."
    Morris Kline

  3. #3
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    Thanks for the help. I am still a newb at this.

  4. #4
    drdroid
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    Post reply

    you could also use this function....

    Code:
    #include <iostream.h>
    #include <string.h>
    char dir[30];
    cin >> dir;
    if(!strcmp(dir,"North"))
    {
    cout << "Follow Up";
    }
    else
    {
    cout << "Wrong!";
    }

  5. #5
    drdroid
    Guest

    Post !

    Take out the ! before the strcmp and it will work, sorry for the mishap.

  6. #6
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    Re: reply

    Originally posted by drdroid
    you could also use this function....

    Code:
    #include <iostream.h>
    #include <string.h>
    char dir[30];
    cin >> dir;
    if(strcmp(dir,"North"))
    {
    cout << "Follow Up";
    }
    else
    {
    cout << "Wrong!";
    }
    that would probably be the most effictive or if you just want to change your current code try this

    Code:
    #include <iostream.h>
    int main();
    {
        char directions;  //can't you use a char* for a string of unknown length?  I'm so out of practice....
    
        cout<<"What do you want to do?";
    
        cin>>directions;                                //takes only 1 char, "N" for ex.
    
    ***here you will want to clear the buffer, I don't remember how to do that***
    
    if ( [directions=="N"] || [directions == "n")
    {
       whatever
    }
    This space for Rent.

  7. #7
    C++ Developer XSquared's Avatar
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    Ontario, Canada
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    Code:
    #include <iostream>
    #include <conio.h>
    
    using namespace std;
    
    char ToLower(char);
    
    int main()
    {
    	char directions;					//The character which will hold the direction
     	cout<<"What do you want to do?";	
     	cin>>directions;					//Get the user's direction (N) for north, etc
      	cin.ignore(1,'\n');					//Flush the input buffer
      	switch (ToLower(directions))
      	{
      	case 'n':
    		cout<<"You pressed north.";
    		break;
    	case 's':
    		cout<<"You pressed south.";
    		break;
    	case 'w':
    		cout<<"You pressed west.";
    		break;
    	case 'e':
    		cout<<"You pressed east.";
    		break;
    	}
    	getch();
    	return 0;
    }
    
    char ToLower(char InChar)
    {
    	if((InChar >= 'A') && (InChar <= 'Z'))
    	{
    		InChar += ('a' - 'A');
    	}
    	return InChar;
    }
    Last edited by XSquared; 08-17-2002 at 12:48 AM.
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