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//Assignment: 4
//Date: 10/8/2012
//Purpose: To verify a password entered by the user by certain guidelines
#include <iostream>
#include <string>
#include <cstring>
#include <cmath>
#include <iomanip>
#include <cstdlib>
#include <Windows.h>
using namespace std;
void CharCheck(char[], int);
void UpperCheck(char[], int);
void LowerCheck(char[], int);
bool DigitCheck(char[], int);
int main()
{
//variables
const int LENGTH = 80; //max length for password
char password[LENGTH]; //array of char
bool correct = false;
//title
cout << "\t\t\t\tPASSWORD VALIDATOR\n\n\n\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);
CharCheck(password, LENGTH); //Character check function
if (correct)
{
//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
void CharCheck(char password[], int size)
{
bool correct = false;
int length = strlen(password);
//error check
if (length >= 6) //if length is >= 6 char return false
correct = true;
else //if length is < 6 char return true
correct = false;
if (correct)
UpperCheck(password, size);
else
{
do {
cout << "\n\n\tOops! Your password must contain at least 6 characters. ";
cin.getline(password, size);
length = strlen((password));
} while (length < 6);
}
}
//Uppercase check function
void UpperCheck(char password[], int size)
{
bool correct = false;
int length = strlen(password);
for (int i = 0; i < length; i++)
{
if (isupper(password[i]))
{
correct = true;
i = length;
}
else
correct = false;
}
if (correct)
LowerCheck(password, size);
else
{
do {
cout << "\n\n\tOops! Your password must contain at least 1 uppercase letter. ";
cin.getline(password, size);
for (int i = 0; i < length; i++)
{
if (isupper(password[i]))
{
correct = true;
i = length;
}
else
correct = false;
}
} while (!correct);
}
}
//Lowercase check function
void LowerCheck(char password[], int size)
{
bool correct = false;
int length = strlen(password);
for (int i = 0; i < length; i++)
{
if (islower(password[i]))
{
correct = true;
i = length;
}
else
correct = false;
}
if (correct)
DigitCheck(password, size);
else
{
do {
cout << "\n\n\tOops! Your password must contain at least 1 lowercase letter. ";
cin.getline(password, size);
for (int i = 0; i < length; i++)
{
if (islower(password[i]))
{
correct = true;
i = length;
}
else
correct = false;
}
} while (!correct);
}
}
//Digit check function
bool DigitCheck(char password[], int size)
{
bool correct = false;
int length = strlen(password);
for (int i = 0; i < length; i++)
{= if (isdigit(password[i]))
{
correct = true;
i = length;
}
else
correct = false;
}
if (correct)
return correct;
else
{
do {
cout << "\n\n\tOops! Your password must contain at least 1 digit. ";
cin.getline(password, size);
for (int i = 0; i < length; i++)
{
if (isdigit(password[i]))
{
correct = true;
i = length;
}
else
correct = false;
}
} while (!correct);
}
}
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