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//Title: Password Verifier
//Date: 10/8/2012
//Purpose: To verify a password entered by the user by certain guidelines
#include <iostream>
#include <string>
#include <cstring>
#include <cmath>
using namespace std;
bool CharCheck(char[], int, bool&);
bool UpperCheck(char[], int, bool&);
bool LowerCheck(char[], int, bool&);
bool DigitCheck(char[], int, bool&);
int main()
{
//variables
const int LENGTH = 80; //max length for password
char password[LENGTH]; //array of char
bool incorrect = false;
//title
cout << "\t\t\t\tPASSWORD VALIDATOR\n\n\n\n\n";
//loop for password validation
do {
if (incorrect)
cout << "\n\n\n\tOops! Your password must meet the password criteria!\n\n";
//get password
cout << "\tPlease enter a password containing at least six characters \n"
<< "\twith at least one digit 0-9, one uppercase letter, and one \n"
<< "\tlowercase letter. ";
cin.getline(password, LENGTH);
switch(incorrect)
{
case 1: CharCheck(password, LENGTH, incorrect); //Character check function
if (incorrect) break;
case 2: UpperCheck(password, LENGTH, incorrect); //Lowercase check function
if (incorrect) break;
case 3: LowerCheck(password, LENGTH, incorrect); //Lowercase check function
if (incorrect) break;
case 4: DigitCheck(password, LENGTH, incorrect); //Digit check function
}
} while (incorrect);
//clear screen
system("cls");
//title
cout << "\t\t\t\tPASSWORD VALIDATOR\n\n\n\n\n";
//display password verified
cout << "\t\t****************************************************\n";
cout << "\t\t\t\t CONGRATULATIONS!\n";
cout << "\t\t****************************************************\n";
cout << "\n\n\n\n\t\t\t Your Password Has Been Verified!";
cout << endl << endl << endl << endl << endl << endl;
system("pause");
return 0;
}
/********************************************************************************************
| FUNCTIONS |
*********************************************************************************************/
//Character check function
bool CharCheck(char password[], int size, bool &incorrect)
{
int length = strlen(password);
//error check
if (length >= 6) //if length is >= 6 char return false
incorrect = false;
else //if length is < 6 char return true
incorrect = true;
return incorrect;
}
//Uppercase check function
bool UpperCheck(char password[], int size, bool&incorrect)
{
int length = strlen(password);
for (int i = 0; i < length; i++)
{
if (isupper(password[i]))
incorrect = false;
else
incorrect = true;
}
return incorrect;
}
//Lowercase check function
bool LowerCheck(char password[], int size, bool&incorrect)
{
int length = strlen(password);
for (int i = 0; i < length; i++)
{
if (islower(password[i]))
incorrect = false;
else
incorrect = true;
}
return incorrect;
}
//Digit check function
bool DigitCheck(char password[], int size, bool&incorrect)
{
int length = strlen(password);
for (int i = 0; i < length; i++)
{
if (isdigit(password[i]))
incorrect = false;
else
incorrect = true;
}
return incorrect;
}
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