Thread: Creating operators.....

Originally Posted by Sentral

How can one create an operator to be used in their own program? For example, say I want the character '@' to be used for multiplying numbers together.

You can't. Plain and simple.

Originally Posted by Sentral

How do the standard C++ operators work?

They're little tokens that the compiler understands and can convert accordingly when it sees them.

Well... you can create a @ operator and use it to perform multiplication, or addition, or whatever.

You need to create a parser and a small lexer that will encapsulate the rules.

it could be as simple as:

Code:

double calculate(int left_arg, int right_arg, char oper) {
    switch(oper) {
        case '@':
             return left_arg * right_arg;
             break;
        case /* ... */
             /* ... */
    }
}

Originally Posted by Mario F.

Well... you can create a @ operator and use it to perform multiplication, or addition, or whatever.

I believe he's referring to an operator to be used in the code's syntax, not inside of a program.

However, you can in fact use a nonstandard operator to be used in your C++ code! All you have to do is write your own C++ compiler that doesn't completely conform to the standards. Enjoy!

He doesn't need a compiler for that either. Just a parser that translates his altered code to something C++ standard compiler can read.

Actually your first sentence was clear enough, but the

How do the standard C++ operators work?

Could be argued as being the exact opposite of clear. Some kind of... I don't know... non-anti-clearite... I don't know, I don't think there is a word for it. But that's what it is!