Copies vs References

Lab C++ Intermediate 20 points

Given struct Score { int value; };, write void bumpCopy(Score s) and void bumpRef(Score &s) that add 10. Read a value, call both, and print the value after each call.

Input

One integer.

Output

Two lines.

Example

Input

Output

5
15

Sample input available Sample output available

Editor

C++

Hints

Objects are passed by value (copied) unless you use a reference.

Solution explanation

Unlike Java, C++ copies whole objects when you pass them by value.

Show solution

#include <iostream>
using namespace std;

struct Score {
    int value;
};

void bumpCopy(Score s) { s.value += 10; }
void bumpRef(Score &s) { s.value += 10; }

int main() {
    Score s;
    cin >> s.value;
    bumpCopy(s);
    cout << s.value << "\n";
    bumpRef(s);
    cout << s.value << "\n";
    return 0;
}

Output

Answer