Constructor conversion.

[WREY]

According to the rules of C++, a constructor for a class taking a single parameter, could be used to implicitly convert the value of the constructor's parameter type to a value of the constructor's class type. That means, I ought to be able to convert an "int" value, to a "Number" value. That is not happening. Can anybody see why? Thanks! ====================================

class Acct;

class Number
{
public:
Number(int i=0) : n(i) {}
Number(const Acct& ac) : acct(ac) {}

void print(Number nbr) { cout<< " Nbr: " << nbr <

Because it's an "int" I'm printing (as a result of the conversion), I should be able to use the regular standard I/O operators to output the result. The compiler doesn't believe so, and is complaining about that too.

:confused:

William

Fortes in fide et opere!

[Vimal Earnest]

William, The conversion from int to Number is legitimate in C++, and my VC++ 6.0 compiles it fine. But the print function wont compile, since you are printing a 'Number' and not an int.The compiler has no idea about printing the Number type.To do this you need to overload the insertion operator "<<". ~ Vimal

[Anonymous]

Try changing the print to take a reference: void print (Number &nbr)

[WREY]

Thanks Vimal. You make a lot of sense and you are correct. However, I had done just what you recommended before posting the note, and everything did work for me. But when examined, overloading the stream insertion operator "<<" didn't looked like it bought me anything, because I could have obtained the same result if I had not used constructor conversion and had done things the regular way, using an "int" instead for my print() parameter. I figured as part of the ctor conversion technique, one of the benefits I would obtain, would be NOT having to overload the "<<" operator. Secondly (and this is the part that made me refused to give up), I thought somebody might know of a way (that I didn't) to make what I was trying to achieve, work. I thank you for your response because it tells me what I was dreaming of doing, will just not work. Thanks again! :cool: William Fortes in fide et opere!