C++ | References | Question 5
#include<iostream>using namespace std; int &fun(){ int x = 10; return x;}int main(){ fun() = 30; cout << fun(); return 0;} |
(A) May cause runtime error
(B) May cause compiler error
(C) Always works fine.
(D) 0
Answer: (A)
Explanation: Since we return reference to a local variable, the memory location becomes invalid after function call is over. Hence it may result in segmentation fault runtime error.
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