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How to initialize private static members in C++?
Here we will see how to initialize the private static member variables initialization in C++. We can put static members (Functions or Variables) in C++ classes. For the static variables, we have to initialize them after defining the class.
To initialize we have to use the class name then scope resolution operator (::), then the variable name. Now we can assign some value.
The following code will illustrate the of static member initializing technique.
Example
#include <iostream>
using namespace std;
class MyClass{
private:
static int st_var;
public:
MyClass(){
st_var++; //increase the value of st_var when new object is created
}
static int getStaticVar() {
return st_var;
}
};
int MyClass::st_var = 0; //initializing the static int
main() {
MyClass ob1, ob2, ob3; //three objects are created
cout << "Number of objects: " << MyClass::getStaticVar();
}Output
Number of objects: 3
Updated on: 30-Jul-2019
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