Help with program

Apr 4, 2015 at 9:51pm
Bocian (16)
Im trying to get a password verifier program working, i have made functions for it but, when i put in input it saves the first time but after it goes into checklength function it just goes in as a blank space.

I put some debugging things for me in there but i still can't figure out why its not working.

Thanks for the help



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#include <iostream>
#include <string>
#include <iomanip>
#include <cstring>

using namespace std;

//****************************************************************************************************

void getInput(char password[]);
bool checkLength (char password[]);
bool checkCase (char password[]);
bool checkLowercase (char password[]);
bool checkDigit (char password[]);
bool checkAlpha (char password[]);
bool checkWhiteSpace (char password[]);

//****************************************************************************************************

int main()
{
	
	char input[SIZE], myPassword[SIZE];
	const int SIZE = 50;
	
	bool inputLength;
	bool inputCase; 
	bool inputLowercase; 
	bool inputDigit; 
	bool inputAlpha; 
	bool inputWhiteSpace; 

	
	getInput (input);

	cout << "pass: " << input << endl; // rafal
	 inputLength = checkLength(input);
	cout << "pass: " << input << endl; // rafal
    inputCase = checkCase(input);
	cout << "pass: " << input << endl; // rafal
	inputLowercase = checkLowercase(input);
	inputDigit = checkDigit(input);
    inputAlpha = checkAlpha(input);
	inputWhiteSpace = checkWhiteSpace(input);
	cout << "pass: " << input << endl; // rafal
	
}

//****************************************************************************************************

void getInput(char password[])
{
	cout << "********************************************************************************";
	cout << "Please enter a valid password" << endl;
	cin.getline (password,SIZE);
		
}
//***************************************************************************************************

bool checkWhiteSpace (char password[])
{
    bool iswhitespace = true;

    for (int cnt = 0; cnt < SIZE; cnt++)
    {
        if (password [cnt] == ' ')
        {
            iswhitespace = false;
			cout << "Error, password must not contain any whitespace.\n";
            break;
        }
    }

    return iswhitespace;
}

//****************************************************************************************************

bool checkLength (char password[])
{
    int numChar = 0;
    bool validlength = false;

    for (int cnt = 0; cnt < SIZE; cnt++)
    {
        if (password [cnt] = '\0')
		{
        numChar = cnt;
		break ;
		}
cout << "number cout : " << cnt << "pass " << password << endl; // rafal
    }

    if ((numChar >= 6) && (numChar <= 13))    
        validlength = true;

	if (validlength = false)
	{
		 cout << "Error, password must be at least 6 characters long.\n";
	}

    return validlength;

}

//****************************************************************************************************
bool checkLowercase(char password[])
{
	bool lower = false;
    for (int cnt = 0; cnt < SIZE; cnt++)
    {
        if (islower(password[cnt]!='\0'))
        return true;
    }
	if (lower == false)
	{
	cout << "Error, password must contain at least one lower case letter.\n";
	}
    return lower;
}
//****************************************************************************************************
bool checkCase(char password[])
{
	bool upper = false;
    for (int cnt = 0; cnt < 20; cnt++)
    {
        if (isupper(password[cnt]))
        return true;
    }
	if ( upper == false)
	{
	cout << "Error, password must contain at least one upper case letter.\n";
	}
    return upper;
}
//****************************************************************************************************
bool checkDigit(char password[])
{
	bool digit = false;
    for (int cnt = 0; cnt < 20; cnt++)
    {
        if (isdigit(password[cnt]))
        return true;
    }
	if ( digit == false)
	{
	cout << "Error, password must contain at least one digit.\n";
	}
    return digit;
}
//****************************************************************************************************

bool checkAlpha (char password[])
{
	bool Alpha = false;
	int i = 0;

	while ((password [i] != '\0') && (!Alpha))
	{
		if (!isalnum (password [i]))
			Alpha = true;
			i++;
		
	}
	if ( Alpha == false)
	{
		cout << "Error, password must contain at least one symbol that is not numeric.\n";
	}

	return Alpha;
}
Edit & run on cpp.sh
Apr 4, 2015 at 10:13pm
Smac89 (1727)
[Line 86] You need to use:
if (password [cnt] == '\0')
Apr 5, 2015 at 4:09am
Bocian (16)
i fixed that but that is not the main problem. my input disappears after i call it. When i check for it it displays then it just vanishes and i don't know why.
Apr 5, 2015 at 5:59am
Smac89 (1727)
If you've fixed it then update your code to match the fix.
Another one:
1
2
 
[Line 97]
if (validlength = false)


Applying both fixes, and running the code does not seem to produce the same output you claim it does:
http://coliru.stacked-crooked.com/a/d0c6675d5e91d0ba
Apr 5, 2015 at 6:34am
closed account (SEh54iN6)
There are many errors in your program, I check them all and rewrite it, it should look like this:

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#include <iostream>
#include <string>
#include <iomanip>
#include <cstring>

#define SIZE 50

using namespace std;

void getInput(char password[]);
bool checkLength (char password[]);
bool checkUpperCase (char password[]);
bool checkLowerCase (char password[]);
bool checkDigit (char password[]);
bool checkAlpha (char password[]);
bool checkWhiteSpace (char password[]);

int main()
{
	char input[SIZE], myPassword[SIZE];
	
	bool inputLength;
	bool inputUpperCase; 
	bool inputLowerCase; 
	bool inputDigit; 
	bool inputAlpha; 
	bool inputWhiteSpace; 

	
	getInput (input);

	inputLength = checkLength(input);
	inputUpperCase = checkUpperCase(input);
	inputLowerCase = checkLowerCase(input);
	inputDigit = checkDigit(input);
	inputAlpha = checkAlpha(input);
	inputWhiteSpace = checkWhiteSpace(input);

	if (inputLength && inputLowerCase && inputDigit &&
	    inputUpperCase && inputAlpha && inputWhiteSpace)
	     cout << "The password is legal.\n";

	return 0;
}

void getInput(char password[])
{
	cout << "Please enter a valid password: ";
	cin.getline (password,SIZE);
		
}

bool checkWhiteSpace (char password[])
{
	bool iswhitespace = true;

	string t = password;
	for (int cnt = 0; password[cnt] != '\0'; cnt++)
	{
		if (password[cnt] == ' ')
		{
			cout << "Error, password must not contain any whitespace.\n";
			return false;
		}
	}

	return true;
}

bool checkLength (char password[])
{
        int numChar = 0, cnt = 0;

	while(password[cnt++] != '\0')
		numChar++;

	if ((numChar >= 6) && (numChar <= 13))    
		return true;

	cout << "Error,Must be at least 6 characters long and up to 13.\n";
	return false;
}

bool checkLowerCase(char password[])
{
	for (int cnt = 0; password[cnt] != '\0'; cnt++)
	{
		if (islower(password[cnt]))
		return true;
	}
	cout << "Error, password must contain at least one lower case letter.\n";
	return false;
}

bool checkUpperCase(char password[])
{
	for (int cnt = 0; password[cnt] != '\0'; cnt++)
	{
		if (isupper(password[cnt]))
		return true;
	}
	cout << "Error, password must contain at least one upper case letter.\n";
	return false;
}

bool checkDigit(char password[])
{
	for (int cnt = 0; password[cnt] != '\0'; cnt++)
	{
		if (isdigit(password[cnt]))
		return true;
	}
	cout << "Error, password must contain at least one digit.\n";
	return false;
}

bool checkAlpha (char password[])
{
	for(int cnt = 0; password[cnt] != '\0'; cnt++)
	{
		if (!isdigit(password[cnt]))
		return true;
	}
	cout << "Error, password must contain at least one symbol that is not numeric.\n";
	return false;
}
Edit & run on cpp.sh


And I tested the program, it worked well. :-))
Last edited on Apr 5, 2015 at 6:35am
Apr 5, 2015 at 1:32pm
Bocian (16)
Thanks a lot Terrison, i was working on it last night but i forgot to check the website. Thank you again
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