Modern C++ for Absolute Beginners: A Friendly Introduction to the C++ Programming Language and C++11 to C++23 Standards

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

S. DmitrovićModern C++ for Absolute Beginnershttps://doi.org/10.1007/978-1-4842-9274-7_30

30. Exercises

Slobodan Dmitrović¹  

(1)

Belgrade, Serbia

 

Static Variable

Write a program that checks how many times a function was called from the main program. We will use a local static variable inside a function, and we will increment this variable each time the function is called in main():

#include <iostream>

void myfunction()

{

    static int counter = 0;

    counter++;

    std::cout << "The function is called " << counter << " time(s)." << '\n';

}

int main()

{

    myfunction();

    myfunction();

    for (int i = 0; i < 5; i++)

    {

        myfunction();

    }

}

Output:

The function ...