C++ | Misc C++ | Question 3
Predict the output of following C++ program
#include<iostream>using namespace std; union A { int a; unsigned int b; A() { a = 10; } unsigned int getb() {return b;}}; int main(){ A obj; cout << obj.getb(); return 0;} |
(A) Compiler Error: union can’t have functions
(B) Compiler Error: can’t access private members of A
(C) 10
(D) garbage value
Answer: (C)
Explanation: Like struct and class, union can have methods. Like struct and unlike class, members of union are public by default.
Since data members of union share memory, the value of b becomes same as a.
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