On 7 June 2012 18:09, Arthur Schwarz wrote: > > > I am using g++ 4.5.3 as my compiler and NetBeans 7.1.2 as my IDE. > > What I wnat to do is to overload operators using all selected types. What I get > are error messages indicating that the usage is ambiquous. I understaad that > the runtime usage may be ambiguous using literal values. Literals are not run-time values, they are compile-time values, a call using a literal must be resolved at compile-time like any other call. > I don't understand why > a typed variable would cause ambiguity. And I would like to know how to code > around the issue. The issue (to me) is that char can be widened to long, and > unsigned char can be widened to unsigned long, but how do I take care of issues > between unsigned (char or long) and signed (char or long) since their ranges > are different. A long can be converted to any of the types you have overloaded the function for, there is no "hierarchy" of types that a long would prefer to convert to. You should overload the function for all types you need it for or explicitly convert the argument to one of the types you have overloaded the function for.
