RSecurity Sdn. Bhd

/**
* @author Mahadir Ahmad
**/

#include <iostream>
#include <fstream>
#include <string>
using namespace std;


bool isValid(string strSecurityAlphabet)
{
	int iAsciiCode;
	char cprev;
	//rule 1
	if(strSecurityAlphabet.length() <= 2 || strSecurityAlphabet.length() >= 27)
		return false;
	//rule 2
	for (unsigned i=0; i<strSecurityAlphabet.length(); ++i)
	{
		iAsciiCode = (int) strSecurityAlphabet.at(i);
		if(iAsciiCode < 65 || iAsciiCode > 90 )
			return false;
	}
	//rules 3
	for (int i = 0; i < strSecurityAlphabet.length(); i++) 
	{
		for (int j = i + 1; j < strSecurityAlphabet.length();) 
		{
            if (strSecurityAlphabet[i] == strSecurityAlphabet[j]) 
			{
                return false;
            } else 
			{ 
                j++;
            }
        }
 
    }

	return true;

}

int main () {
  string line;
  ifstream myfile ("A.in");
  int lineNo=0;
  if (myfile.is_open())
  {
    while ( getline (myfile,line) )
    {
		if(lineNo==0)
		{
			lineNo++;
			continue;
		}
			
      if(isValid(line))
		  cout << "Case #" << lineNo << ": VALID" << endl;
	  else
		  cout << "Case #" << lineNo << ": INVALID" << endl;

	  lineNo++;
    }
    myfile.close();
  }

  else cout << "Unable to open file"; 

  return 0;
}