Recap - Validation Function

Part of the Fundamentals section of Coddy's C++ journey — lesson 56 of 74.

Challenge

Easy

Write a function named is_valid that gets two string arguments, username and password.

The function will return true if the username and password are valid in the system, otherwise false.

Our system contains only two valid usernames - "admin" and "user".

The valid password for username "user" is "qwerty".

For username "admin" any password is valid!

Try it yourself

#include <iostream>
#include <string>

bool is_valid(std::string username, std::string password) {
    // Write your code below
    
}

int main() {
    std::string user, pass;
    std::cin >> user;
    std::cin >> pass;
    bool res = is_valid(user, pass);
    std::cout << (res ? "true" : "false");
    return 0;
}

All lessons in Fundamentals

1Introduction

C++Hello World!Comments Basic Program Structure

4Operators Part 1

Arithmetic Operators Modulo Operator Increment/Decrement Post Increment/Decrement Arithmetic Shortcuts Comparison Operators String Comparison

7Input/Output Basics

cout Statement cin Statement String Input Recap - Till 120 Recap - True or False

10Functions

Declare a Function Parameters Return Types Function Overloading Recap - Sigma FunctionRecap - Validation FunctionVoid Functions

13Final Challenges

Number Pattern Pattern Finder Student Grade Calculator