hi, how to overload operators in C++?Normally, following lines are not allowed: double d = 5; d = d^2; //i wanna d to be 25; How do I overload the operator ^ myself, to allow d=d^2? Thanks! [chancing (12-28 23:54, Long long ago)] [ 传统版 | sForum ][登录后回复]1楼

dependsfrom your words, should do it in this way.

double operator ^(double a, double b) {
return ...;
}

this might not work, because compiler may not be able to differetiate this with its normal meaning - Bitwise Exclusive OR Operator: ^. try it by yourself with the compiler.

Remember to do cast before the actual prarameter, or it will be just Bitwise Exclusive OR Operator if it happend both operands are of int type.[xscheme (12-29 5:25, Long long ago)] [ 传统版 | sForum ][登录后回复]2楼

-->double operator ^ (double d)
{
return d*d;
}[icky (12-29 8:51, Long long ago)] [ 传统版 | sForum ][登录后回复]3楼

(引用 icky:-->double operator ^ (double d) { return d*d; })^ is XOR, you can use another operator name for it[icky (12-29 8:54, Long long ago)] [ 传统版 | sForum ][登录后回复]4楼

operator's primitive meaning is not allowed to be changed..and new operator cannot be created. read more about operator overloading on any c++ book[hula (12-30 7:15, Long long ago)] [ 传统版 | sForum ][登录后回复]5楼