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C++ Data validation

 
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zaczac
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Joined: 01 May 2007
Posts: 266
Location: Ontario, Canada
PostPosted: Fri Jan 27, 2012 11:06 am    Post subject: C++ Data validation Reply with quote
Just started learning C++ and got stuck while writting my code, the code works fine but if a user enters something other than a number it craps out.. if anyone could give me a hand I would appeciate it Shocked

Code:
#include "stdafx.h"
#include <iostream>
#include <cmath>
#include <string>
using namespace std;

int main()
{
   int score[5][3];
   int currentScoreAvg=0;
   int totalScore=0;
   int playerScore=0;
   for (int player = 0; player<5; player++)
   {
      cout << "Player "<<player+1<<endl;
      for(int game = 0; game<3; game++)
      {
         
         cout<< "Please Enter Score \n";
          cin>> playerScore;
         if(playerScore>300 || playerScore<0)
         {
            cout<<"Please enter a valid score between 1-300 inclusive \n";
            game--;
            
         }
         else
         {   
            score[player][game] = playerScore;
            currentScoreAvg += score[player][game];
         }
         }
         
      cout<< "Average score for this player is "<< currentScoreAvg/3<<endl;
      totalScore+=(currentScoreAvg/3);
      currentScoreAvg=0;
   }
   cout <<"Average score for whole team is " <<totalScore/5<<endl;
   system ("pause");
}
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atom0s
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Reputation: 205

Joined: 25 Jan 2006
Posts: 8587
Location: 127.0.0.1
PostPosted: Fri Jan 27, 2012 12:15 pm    Post subject: Reply with quote
You can use various functions such as:
- isdigit
- atoi
- stringstream (Read as string and output to a type of your choice.)
- scanf
_________________
- Retired.
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zaczac
Master Cheater
Reputation: 0

Joined: 01 May 2007
Posts: 266
Location: Ontario, Canada
PostPosted: Fri Jan 27, 2012 12:45 pm    Post subject: Reply with quote
Tryed isdigit and isalpha but its still acting strange... see anything wrong with this?

Code:
#include "stdafx.h"
#include <iostream>
#include <cmath>
#include <ctype.h>
#include <string>
using namespace std;

int main()
{
   int score[5][3];          //array to hold the score for each user and the current player
   int currentScoreAvg=0;    //variable to hold the users current average score
   int totalScore=0;         //variable to hold the total score (all users)
   char playerScore;        //variable to hold the input from the user (players Score)

   for (int player = 0; player<5; player++)
   {
      cout << "Player "<<player+1<<endl;
      for(int game = 0; game<3; game++)
      {
         cout<< "Please Enter Score \n";
          cin>> playerScore;

   
         if(playerScore>300 || playerScore<0 || isalpha(playerScore))
         {
            cout<<"Please enter a valid score between 1-300 inclusive \n";

            game --;
         }
         else
         {   
            score[player][game] = playerScore;
            currentScoreAvg += score[player][game];
         }
      }
      cout<< "Average score for this player is "<< currentScoreAvg/3<<endl;
      totalScore+=(currentScoreAvg/3);
      currentScoreAvg=0;
   }
   cout <<"Average score for whole team is " <<totalScore/5<<endl;
   system ("pause");
}
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