Description
Problem 1
Write a function
bool checkpass(const char* pass);
which takes a password (as a C-string, i.e., array of characters) and checks its validity. We assume that a valid password contains
-
at least 8 characters;
-
at least 6 dierent characters;
-
at least 1 digit;
-
at least 1 uppercase letter;
-
at least 1 lowercase letter;
-
at least 1 non-alphanumeric character (which is neither a letter nor a digit).
The function returns true if the password is correct; if it is not, false is returned, and before returning the function displays information about all causes of the failure. You can assume that all characters are plain ASCII characters with codes from the the range [32; 126]. [You may nd useful to dene some simple auxiliary functions.]
For example, the following program
#include <iostream>
// …
bool checkpass(const char* pass) {
// …
}
int main() {
using std::cout; using std::endl;
const char* passes[] =
{
“AbcDe93”, “A1b:A1b>”, “Ab:Acb<“,
“abc123><“, “Zorro@123”, nullptr
};
for (int i = 0; passes[i] != nullptr; ++i) { cout << “checking “ << passes[i] << endl;
if (checkpass(passes[i])) cout << “OK” << endl; cout << endl;
}
}1
should print something like
checking AbcDe93
Too short
No non-alphanumeric character
checking A1b:A1b>
Too few different characters
checking Ab:Acb<
Too short
Too few different characters
No digit
checking abc123><
No uppercase letter
checking Zorro@123
OK
Do not include any headers other than iostream!
2
