FAQ:Should myMatrixinterface look like an array-of-array? FAQ:Part two of making myMatrixinterface look like an array-of-array? FAQ:Designing classes from the outside-in vs. inside-out? FAQ:Overloading prefix/postfix forms of operators++and--? FAQ:Which is more efficient:i++or++i?
// Overload ++ when used as a prefix operator#include<iostream>usingnamespacestd;classCount{private:intvalue;public:// constructor to initialize count to 5Count() : value(5) {}// overload ++ when used as prefixvoidoperator++ () { ++value; }voiddisplay(){cout<<"Count: "<< value <<...
obj, -obj, and ++obj but sometime they can be used as postfix as well like obj++ or obj--.Following example explain how minus (-) operator can be overloaded for prefix as well as postfix usage.Open Compiler #include <iostream> using namespace std; class Distance { private: int feet;...
there are easy performance tuning tricks that can be done with theoperator()approach that are more difficult in the[][]approach, and therefore the[][]approach is more likely to lead to bad performance, at least in some cases.
21operator!(constInteger&a); 22//Side effects have non-const& argument: 23//Prefix: 24friendconstInteger& 25operator++(Integer&a); 26//Postfix: 27friendconstInteger 28operator++(Integer&a,int); 29//Prefix: 30friendconstInteger& 31operator--(Integer&a); ...
Typically, it is declared as T operator++(int) or T operator--(int), where the argument is ignored. The postfix increment and decrement operators are usually implemented in terms of the prefix versions: struct X { // prefix increment X& operator++() { // actual increment takes place ...