Question

How do I format this into C++? This the prompt:

Design a class named Password that stores a password in a c-string and has member functions to test if the password complies with certain requirements as follows:

• The password should be between 6 and 20 characters long.
• The password should contain at least one uppercase and at least one lowercase letter.
• The password should have at least one digit.
• The password should have at least one punctuation character.

Define a member function to test each one of the requirements. Use the character functions learned in chapter 10 (cctype header file). The constructor should allocate space for the c-strings that stores the password and the destructor should free that memory.

Write a program that asks the user to enter a password, creates an object of the Password class to store the password and tests if it meets the requirements. If it doesn’t, the program should display a message telling the user why and let them try again until the password's requirements can be validated. The main function should ask for a new password until the user enters one that is acceptable.

Turn in a header file (password.h) with the implementation of your class and the main.cpp that tests it.

Answer 1

Please find the code below:::

#include <iostream>
#include <string.h>
#include <cctype>
using namespace std;

class Password{
private:
   char * password;
   int length;
public:
   Password(char pass[]){
       int len = strlen(pass);
       password = new char(len+1);
       for(int i=0;i<len;i++){
           password[i] = pass[i];
       }
       length = len;
       password[len] = '\0';
   }

   bool lengthCheck(){
       if(length<6 || length>20){
           return false;
       }
       return true;
   }

   bool checkUpperCase(){
       int count=0;
       for(int i=0;i<length;i++){
           if(isupper(password[i])){
               count++;
           }
       }
       if(count>0){
           return true;
       }
       return false;
   }

   bool checkLowerCase(){
       int count=0;
       for(int i=0;i<length;i++){
           if(islower(password[i])){
               count++;
           }
       }
       if(count>0){
           return true;
       }
       return false;
   }

   bool checkDigit(){
       int count=0;
       for(int i=0;i<length;i++){
           if(isdigit(password[i])){
               count++;
           }
       }
       if(count>0){
           return true;
       }
       return false;
   }

   bool checkPunctuation(){
       int count=0;
       for(int i=0;i<length;i++){
           if(ispunct(password[i])){
               count++;
           }
       }
       if(count>0){
           return true;
       }
       return false;
   }

   bool checkIfValidPassword(){
       if(!lengthCheck()){
           cout<<"Error!!! Password length should be between 6 to 20"<<endl;
           return false;
       }

       if(!checkUpperCase()){
           cout<<"Error!!! Password should contains atleast one upper case character"<<endl;
           return false;
       }

       if(!checkLowerCase()){
           cout<<"Error!!! Password should contains atleast one lower case character"<<endl;
           return false;
       }
       if(!checkDigit()){
           cout<<"Error!!! Password should contains atleast one digit character"<<endl;
           return false;
       }
       if(!checkPunctuation()){
           cout<<"Error!!! Password should contains atleast one punctuation character"<<endl;
           return false;
       }
       return true;
   }

};
int main() {
   while(true){
       char passIn[1000];
       cout<<"Enter password : ";
       cin>>passIn;
       Password myPassword(passIn);
       if(myPassword.checkIfValidPassword()){
           cout<<"Password is valid"<<endl;
           break;
       }
   }
   return 0;
}

output:

Console X terminated> CPP Workspace.exe [C/C++ Application] C:1Users Mohammad Shahrukh\Desktoplc langua Enter password: hello Error Password length should be between 6 to 20 Enter password : wow!od Error!!! Password length should be between 6 to 20 6 tEnter password: dfedfe Error Password should contains atleast one upper case character Enter password: dedfePfe Error! Password should contains atleast one digit character Enter password defeDefe8 one Error!!! Password should contains atleast one punctuation character Enter password: dedfeDe38! Password is valid one