Is returning a reference to a local struct c variable on line 7 in the following code considered correct in C++ programming? With 'correct' meaning there will be no side effects or runtime errors after the method call to add(...) on line 11. 1 struct S{ int n = 0; S& add(S a, S b) { 5 7 8} 9 int 10 11 12 13} S ca.n+ b.n}; return c; main() { S x{2}; Sy add(x, x); std::cout << y.n;

Is returning a reference to a local struct c variable on line 7 in the following code considered correct in C++ programming? With 'correct' meaning there will be no side effects or runtime errors after the method call to add(...) on line 11. 1 struct S{ int n = 0; S& add(S a, S b) { 5 7 8} 9 int 10 11 12 13} S ca.n+ b.n}; return c; main() { S x{2}; Sy add(x, x); std::cout << y.n;

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Is returning a reference to a local struct c variable on line 7 in the following code considered correct in C++ programming? With 'correct' meaning there will be no side effects or runtime
errors after the method call to add(...) on line 11.
1 struct S{
2
4
5
6
7
};
int n = 0;
S& add(S a, S b) {
S c a.nb.n };
return c;
8}
9 int main() {
10
11
12
13 }
S x{2};
Sy
add(x, x);
std::cout << y.n;

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