There are a list of words already defined in CPP library, same as in C. These reserved words are called as CPP Keywords. Every keyword is defined to serve a specific purpose. CPP static is one such keyword, which is used as a storage class to represent the scope of a variable within the program. CPP static has a local scope with a default value of 0. It is stored in RAM with a lifetime till the main program is completely executed. The static variable retains value between multiple functions call. The static keyword is memory efficient with a reason that it is not necessary to create instance for accessing the static members.
Example:
#include <iostream.h> using namespace std; class Student { public: string Name; float ID; static string Section; Student(string Name, float ID) { this-> Name = Name; this-> ID = ID; } void details() { cout << "Section : " << Section << endl; cout << "Student Name : " << Name << endl; cout << "Student ID: " << ID << "\n\n"; } }; string Student::Section= "6A"; int main() { Student s1 = Student("Khush", 1); Student s2 = Student("Raam", 2); s1.details(); s2.details(); return 0; } |
Output
Section : 6A Student Name : Khush Student ID: 1 Section : 6A Student Name : Raam Student ID: 2 |
