Your First Class

Lab C++ Beginner 10 points

Write a class Counter with a private int count, and public increment(), reset() and value(). Process commands inc, reset, show.

Input

n, then n commands.

Output

One line per show.

Example

Input

6
inc
inc
show
reset
inc
show

Output

2
1

Sample input available Sample output available

Editor

C++

Hints

Members are private by default in a class; put the interface under public:.

Solution explanation

Private data can only be changed through the class's own methods - that's encapsulation.

Show solution

#include <iostream>
#include <string>
using namespace std;

class Counter {
public:
    void increment() { count++; }
    void reset() { count = 0; }
    int value() const { return count; }

private:
    int count = 0;
};

int main() {
    Counter c;
    int n;
    cin >> n;
    for (int i = 0; i < n; i++) {
        string cmd;
        cin >> cmd;
        if (cmd == "inc") c.increment();
        else if (cmd == "reset") c.reset();
        else cout << c.value() << "\n";
    }
    return 0;
}

Output

Answer