Weak passwords are common source of email and social website accounts hacks. To

Question

Weak passwords are common source of email and social website accounts hacks. To alleviate this problem, the program, when the user chooses a new password, it should determine if it is a legitimately strong password. We are to write a function that validate the password strength. The restrictions that we define as our defined level of strength of passwords is the followings: we make a strength requirement that the password must be at least eight characters long, and must include at least one uppercase and one lowercase letter , one digit. In addition, it must contain at least one string of at least four letters long.

bool isStrongPassword (const char* password)

{

//complete me!

}

Explanation / Answer

bool isStrongPassword(const char* password)

{

bool hasUpper = false;
bool hasLower = false;
bool hasDigit = false;

for(int i =0; i < strlen(password); ++i)
{

    if( islower(password[i]) )
        hasLower = true;

    if( isupper(password[i]) )
        hasUpper = true;

    if( isdigit(password[i]) )
        hasDigit = true;
}
if(hasLower && hasUpper && hasDigit)
{
    printf("Strong Password ");
}
else
{
    printf("Weak Password ");
}

}

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