Does automatic type conversion occur when comparing two structures in a programming language?

In C#, automatic type conversion (implicit conversion) does not occur when comparing two structures if they are of different types. Usually, the Equals method or operator overloading is used for comparing structures.

If the structures are of the same type, the comparison is based on the values of the fields, provided that the Equals method or the == operator is overridden. If the structures are of different types, the compiler will generate an error because it cannot automatically convert one type to another for comparison.

Example:

struct Point {
    public int X, Y;
    public override bool Equals(object obj) {
        if (!(obj is Point)) return false;
        Point p = (Point)obj;
        return X == p.X && Y == p.Y;
    }
}

Point p1 = new Point { X = 1, Y = 2 };
Point p2 = new Point { X = 1, Y = 2 };
bool areEqual = p1.Equals(p2); // true

Thus, there is no automatic type conversion when comparing structures in C#.