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C++ Brain Teasers: Exercise Your Mind

Discussion: A Strong Point

Execute the code to understand the output and gain insights into strong typing and implicit conversions.

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Run the code

Now, it’s time to execute the code and observe the output.

C++ 17
#include <iostream>
struct Points
{
    Points(int value) : value_(value) {}
    int value_;
};
struct Player
{
    explicit Player(Points points) : points_(points) {}
    Points points_;
};
int main()
{
    Player player(3);
    std::cout << player.points_.value_;
}

Strong typing

The Player struct has a points_ member to keep track of the player’s points. Instead of using a fundamental type like int for this, we use a custom type Points. This technique is often called strong typing and can make the code easier to read and avoid bugs. ...

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