C++ | Static Keyword | Question 1
Predict the output of following C++ program.
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#include <iostream>using namespace std; class Test{ static int x;public: Test() { x++; } static int getX() {return x;}}; int Test::x = 0; int main(){ cout << Test::getX() << " "; Test t[5]; cout << Test::getX();} |
(A) 0 0
(B) 5 5
(C) 0 5
(D) Compiler Error
Answer: (C)
Explanation: Static functions can be called without any object. So the call “Test::getX()” is fine.
Since x is initialized as 0, the first call to getX() returns 0. Note the statement x++ in constructor. When an array of 5 objects is created, the constructor is called 5 times. So x is incremented to 5 before the next call to getX().
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