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1. What does this program print? ``

cpp
#include <iostream>
#include <string>
#include <utility>

class Name {
public:
    explicit Name(std::string text) : text_{std::move(text)} {}
    bool operator==(const Name& other) const { return text_ == other.text_; }

private:
    std::string text_;
};

int main() {
    std::cout << (Name{"Asha"} != Name{"Ravi"}) << "\n";
}

``

true01false

2. What does bool operator==(const Point& other) const = default; compare?

Every data member, in declaration orderOnly the first data memberThe memory address of each objectThe text printed by operator<<

3. The compiler rejects this program. What is the reason? ``

cpp
#include <string>
#include <utility>

class Money {
public:
    Money(std::string currency, long cents)
        : currency_{std::move(currency)}, cents_{cents} {}

    long cents() { return cents_; }

private:
    std::string currency_;
    long cents_;
};

int main() {
    const Money price{"USD", 1250};
    return static_cast<int>(price.cents());
}

``

main must return voidcents() is not marked const, so it cannot be called on a const MoneyMoney has no default constructorA std::string cannot be a data member of a class

4. True or false: two equal objects must always have equal hashes.

False, because the hash and == are checked separately and never affect each otherTrue, because a set picks a bucket from the hash, and then uses == to find an equal item

5. A set stores both Point{1, 2} and Point{1, 5}, because operator== compares only x but the hash uses x and y. Which one-line change makes the set keep only one of them?

Make y public, so the hash can read itRemove the const from operator==Make the hash use only xStore the points in a std::vector instead of a set

Immutable and equality