The unary operator in C ++ operates on a single operand and here are some examples of single-operator operators:
Overloading the increment operator (++) and decreasing operator (-) in C ++.
Operator unary (-) in C ++
Negative logical operator (!) In C ++
The unary operator operates on the object to which they are called, and usually this operator appears to the left of the object, such as :! Obj, -obj, and ++ obj , but sometimes they can be used as is suffix like obj ++ or obj-- .
The following example explains how the (-) operator can be overloaded with the use of the prefix as well as the suffix.
#include using namespace std ; class KhoangCach { private : int met ; int centimet ; public : // khai bao cac constructor KhoangCach (){ met = 0 ; centimet = 0 ; } KhoangCach ( int m , int c ){ met = m ; centimet = c ; } // phuong thuc de hien thi khoang cach void hienthiKC () { cout Compiling and running the above C ++ program will produce the following results:
Hopefully the above example will help you understand this concept and you can apply for operator operator (!) In C ++.
According to Tutorialspoint
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