C++ | References | Question 4
Predict the output of following C++ program.
x = 10;
fun() = 30;
cout << fun();
(A) Compiler Error: Function cannot be used as lvalue
Explanation: When a function returns by reference, it can be used as lvalue. Since x is a static variable, it is shared among function calls and the initialization line “static int x = 10;” is executed only once.
The function call fun() = 30, modifies x to 30. The next call “cout << fun()" returns the modified value.
Quiz of this Question
Whether you're preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape, GeeksforGeeks Courses
are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we've already empowered, and we're here to do the same for you. Don't miss out - check it out now!