Referencing variables in a constructor in C++

Question

I'm new to C++, and I had a question about constructors. Say, for example, I'm writing a class for a 2D vector. I want my constructor to take an x coordinate and a y coordinate. The issue is that I also have fields called x and y to store the coordinates.

If I'm writing this constructor in Java, for example, I would write:

public class TwoDVector {
  int x;
  int y;

  public TwoDVector(int x, int y) {
    this.x = x;
    this.y = y;
  }
}

Now, say I wanted to do something similar in C++. C++ doesn't seem to have a this keyword that works the same way as Java's, so would the only course of action be renaming the parameters? Thank you so much for your help!

https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list — eerorika, Sep 22 '20 at 18:50
`this` is a pointer: `TwoDVector(int x, int y) { this->x = x; this->y = y; }` or *better*, using the initialization list: `TwoDVector(int x, int y) : x(x), y(y) { }` . — Jesper Juhl, Sep 22 '20 at 18:53
`this` in C++ is a pointer. You can access a member through a pointer using the `->` operator. Example : `this->x = 10;`. — François Andrieux, Sep 22 '20 at 18:55
Also related: https://stackoverflow.com/questions/1711990/what-is-this-weird-colon-member-syntax-in-the-constructor — πάντα ῥεῖ, Sep 22 '20 at 18:57
Also, there's no reason why you have to have parameter names the same as the member names. — Barmar, Sep 22 '20 at 19:08
Often people would name the parameters x_ and y_ instead of x and y, to avoid confusion. — gnasher729, Sep 22 '20 at 19:10

Referencing variables in a constructor in C++

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