[mahor1989]

I have come across a function definition starting as:

int operator*(vector &y)
{
body
}

After putting * just after operator and before opening brace of argument what this function means?

[Oler1s]

Google: operator overloading.

[Salem_c]

Or while you're at it, read up on forum posting etiquette.

Read this
http://www.catb.org/...ions.html#forum

So you don't do this
http://cboard.cprogr...g-function.html

[Hezekiah]

This is overloading the * (multiplication) operator for the vector type. You probably saw it in a situation similar to this:

struct vector {
    int x, y;
    vector(int newX, int newY) : x(newX), y(newY) {}
    int operator*(vector &v) {
        return x * v.x + y * v.y;
    }
};

Now you can write something like:

vector v1(1, 2), v2(3, 4);
int result = v1 * v2;

This gives result the value 11, which is:

v1.x * v2.x + v1.y * v2.y

(this is called the dot product, but that isn't important now)
The first part of this page explains operator overloading.

This post has been edited by Hezekiah: 24 July 2011 - 11:19 AM