#include <iostream>

// To be eligible to vote in a Canadian federal election,
// a person must, among other requirements,
//
//     1. be a Canadian citizen, and
//     2. be at least 18 years old on election day.
//
// Similar requirements apply to Ontario provincial
// elections.
//
// For this exercise, we will consider only these two
// requirements.
//
// Write a program that asks the user for their age and
// whether they are a Canadian citizen. Then print whether
// or not the user satisfies these two requirements.
//
// Ask the user to enter
//
//     0 for no, or
//     1 for yes
//
// when asked whether they are a Canadian citizen.
//
// If the user enters a negative age or enters something
// other than 0 or 1 for citizenship, print an appropriate
// error message and terminate the program by returning 0
// from main().

// Function declarations
int main();

// Function definitions
int main() {
    int age{};

    std::cout << "Enter your age: ";
    std::cin >> age;

    int is_citizen{};

    std::cout << "Are you a Canadian citizen "
              << "(0 for no, 1 for yes): ";
    std::cin >> is_citizen;

    std::cout << "You are not eligible to vote."
              << std::endl;

    return 0;
}









































// Hint:
//
// There are two conditions that must BOTH be true:
//
//     the person is at least 18 years old
//
// AND
//
//     the person is a Canadian citizen.
//
// Which logical operator represents "and" in C++?
//
// Remember also to check that the values entered by the
// user are valid before determining eligibility.









































// Here is one solution:

/*
int main() {
    int age{};

    std::cout << "Enter your age: ";
    std::cin >> age;

    if ( age < 0 ) {
        std::cout << "Your age must be greater than or equal to 0."
                  << std::endl;

        return 0;
    }

    int is_citizen{};

    std::cout << "Are you a Canadian citizen "
              << "(0 for no, 1 for yes): ";
    std::cin >> is_citizen;

    if ( (is_citizen != 0) && (is_citizen != 1) ) {
        std::cout << "You were asked to enter 0 or 1."
                  << std::endl;

        return 0;
    }

    if ( (age >= 18) && (is_citizen == 1) ) {
        std::cout << "You satisfy the age and citizenship "
                  << "requirements to vote."
                  << std::endl;
    } else {
        std::cout << "You do not satisfy the age and citizenship "
                  << "requirements to vote."
                  << std::endl;
    }

    return 0;
}
*/