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toupper function

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toupper function

 
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  #1
Jun 7th, 2008
I've got a pretty simple question. I'm trying to ask the player for to choose a difficulty. I want the case to be to not affect his choice, so I am using the toupper() function. Unfortunately, when I try to return the value of the difficulty, no matter what difficulty I choose, I receive 2009768935. However, when I enter an answer is all caps, avoiding the use of the toupper() function, everything turns out great.

Here is my code.

C++ Syntax (Toggle Plain Text) 
  1.     cout << "Choose a difficulty among Easy, Intermediate, and Hard.";
  2.     string x;
  3.     int difficulty;
  4.     cin >> x;
  5.     for (int i =0; i <=12; i++)
  6.     { x[i] = x[toupper(i)]; }
  7.     if (x == "EASY" )
  8.     { difficulty = 0; }
  9.     if (x == "INTERMEDIATE" ) 
  10.     { difficulty = 1; }
  11.     if (x == "HARD" )
  12.     { difficulty = 2; }
  13.  
  14.     cout << difficulty;
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Re: toupper function

 
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  #2
Jun 7th, 2008
Hi
I think
x [i] = toupper (x[i]) ;
KSG
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Re: toupper function

 
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  #3
Jun 7th, 2008
Hi
I think
x [i] = toupper (x[i]) ;
Also iterate to the length of the String. Not the fixed value. In the coding u specified 0 to 12.
KSG
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Re: toupper function

 
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  #4
Jun 7th, 2008
why dont you do something like this
C++ Syntax (Toggle Plain Text) 
  1.     if (x == "EASY" || "easy" )
  2.     { 
  3.        difficulty = 0; 
  4.     }
  5. // and so on..
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Re: toupper function

 
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  #5
Jun 7th, 2008
i believe your syntax is wrong
here i is an integer and you are converting that integer into upper case which is absurd.
the use of toupper function works differently
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x[i]=toupper(x[i]);
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Re: toupper function

 
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  #6
Jun 7th, 2008
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Originally Posted by joshmo
> why dont you do something like this
> if (x == "EASY" || "easy" )
You've written (with red bits for clarity)
if ( ( x == "EASY" ) || ( "easy" != NULL ) )
In essence, it's always true, because the right hand side is always true, and the OR makes the whole thing true.
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Re: toupper function

 
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  #7
Jun 7th, 2008
thanx for the correction...didnt see it there.. but actully this was the intetion
C++ Syntax (Toggle Plain Text) 
  1. if (x == "EASY" || x=="easy" )
Last edited by joshmo; Jun 7th, 2008 at 6:40 am.
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Re: toupper function

 
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  #8
Jun 7th, 2008
[edit] sorry multiple post
Last edited by joshmo; Jun 7th, 2008 at 6:45 am.
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Re: toupper function

 
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  #9
Jun 7th, 2008
C++ Syntax (Toggle Plain Text) 
  1. #include <cctype> // for toupper()
  2. #include <algorithm> // for transform()
  3.  
  4. transform(x.begin(), x.end(), x.begin(), toupper);

try this
Last edited by Cybulski; Jun 7th, 2008 at 7:27 am.
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