CODEWITHSUNDEEP
cstructcomparator
Evan
Evan

Reputation: 528

Writing Comparators in C

Is there a way to overload the comparators in C so that we can compare structs using >, =, and <

For example:

struct point {
    int x, y;
}

struct point pt1 = make_point(2, 4);
struct point pt2 = make_point(2, 3);

we could have it compare on the y value (or some arbitrary member of the struct).

if (pt1 > pt2)
{
printf("Point 1 is greater than Point 2\n");
}

and it would print out, Point 1 is greater than Point 2 since 4 > 3.

Upvotes: 1

Views: 602

Answers (4)

cdiggins
cdiggins

Reputation: 18203

As others have said C does not support operator overloading. This kind of programming paradigm is usually accomplished in C by passing a comparator operation using a function pointer. For example see qsort in the standard library.

Upvotes: 1

user529758
user529758

Reputation:

No, C does not support operator overloading. The best you can have is writing a comparator function.

Upvotes: 1

Kiril Kirov
Kiril Kirov

Reputation: 38163

No, this is not possible. This is a C++ feature.

You should write some function, that does this and use it like: if( is_greater( pt1, ptr2 ) ) something like this.

Upvotes: 2

Kerrek SB
Kerrek SB

Reputation: 477000

No, you cannot overload operators in C. You cannot even overload ordinary functions in C.

Upvotes: 3

Related Questions