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Basic Error Checking

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Join Date: Mar 2005

Posts: 1

Reputation: Chadmo is an unknown quantity at this point

Solved Threads: 0

Chadmo

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Newbie Poster

Basic Error Checking

Mar 12th, 2005

Aloha,

I am trying to add some basic error checking to my program. I have it only accepting the correct numbers (Positive) but when a 'char' is entered, it displays my message infinately.

Any ideas?

cout << "For DEBUG information press 1, to omit, press 0:";
cin >> DEBUG;
if ((DEBUG != 1) && (DEBUG != 0))
//this works for numbers but not letters
{cout <<"Sorry, that was not a valid entry, Please try again." << endl;
cout << "For DEBUG information press 1, to omit, press 0:";
cin >> DEBUG;}

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Join Date: Sep 2004

Posts: 7,541

Reputation: Narue has a reputation beyond repute

Solved Threads: 704

Narue

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Code Goddess

Re: Basic Error Checking

Mar 12th, 2005

A good start is something along these lines:

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 C++ Syntax (Toggle Plain Text) 
#include <iostream>
 
using namespace std;
 
int main()
{
  int n;
 
  while ( !( cin>> n ) && !cin.eof() ) {
    cerr<<"Invalid input"<<endl;
    cin.clear();
    cin.ignore ( cin.rdbuf()->in_avail() );
  }
 
  if ( !cin.eof() )
    cout<<"You entered "<< n <<endl;
}
#include <iostream>

using namespace std;

int main()
{
  int n;

  while ( !( cin>> n ) && !cin.eof() ) {
    cerr<<"Invalid input"<<endl;
    cin.clear();
    cin.ignore ( cin.rdbuf()->in_avail() );
  }

  if ( !cin.eof() )
    cout<<"You entered "<< n <<endl;
}