#include <iostream>

using namespace std;

int main() {
    int a{23},
        b{3},
        c;

    cout << endl;
    cout << "BEFORE: a = " << a << endl;
    cout << "BEFORE: b = " << b << endl;
    cout << "BEFORE: c = " << c << endl;
    cout << "c = a + b; " << endl;
    c = a + b;
    cout << "AFTER: a = " << a << endl;
    cout << "AFTER: b = " << b << endl;
    cout << "AFTER: c = " << c << endl;

    cout << endl;
    cout << "BEFORE: a = " << a << endl;
    cout << "BEFORE: b = " << b << endl;
    cout << "BEFORE: c = " << c << endl;
    cout << "c = a - b; " << endl;
    c = a - b;
    cout << "AFTER: a = " << a << endl;
    cout << "AFTER: b = " << b << endl;
    cout << "AFTER: c = " << c << endl;

    cout << endl;
    cout << "BEFORE: a = " << a << endl;
    cout << "BEFORE: b = " << b << endl;
    cout << "BEFORE: c = " << c << endl;
    cout << "c = a * b; " << endl;
    c = a * b;
    cout << "AFTER: a = " << a << endl;
    cout << "AFTER: b = " << b << endl;
    cout << "AFTER: c = " << c << endl;

    cout << endl;
    cout << "BEFORE: a = " << a << endl;
    cout << "BEFORE: b = " << b << endl;
    cout << "BEFORE: c = " << c << endl;
    cout << "c = a / b; " << endl;
    c = a / b;
    cout << "AFTER: a = " << a << endl;
    cout << "AFTER: b = " << b << endl;
    cout << "AFTER: c = " << c << endl;

    cout << endl;
    cout << "BEFORE: a = " << a << endl;
    cout << "BEFORE: b = " << b << endl;
    cout << "BEFORE: c = " << c << endl;
    cout << "c = a % b; " << endl;
    c = a % b;
    cout << "AFTER: a = " << a << endl;
    cout << "AFTER: b = " << b << endl;
    cout << "AFTER: c = " << c << endl;

    cout << endl;
    c = a;
    cout << "BEFORE: b = " << b << endl;
    cout << "BEFORE: c = " << c << endl;
    cout << "c += b; " << endl;
    c += b;
    cout << "AFTER: b = " << b << endl;
    cout << "AFTER: c = " << c << endl;

    cout << endl;
    c = a;
    cout << "BEFORE: b = " << b << endl;
    cout << "BEFORE: c = " << c << endl;
    cout << "c %= b; " << endl;
    c %= b;
    cout << "AFTER: b = " << b << endl;
    cout << "AFTER: c = " << c << endl;

    cout << endl;
    c = 0;
    cout << "BEFORE: a = " << a << endl;
    cout << "BEFORE: c = " << c << endl;
    cout << "c = a++; " << endl;
    c = a++;
    cout << "AFTER: a = " << a << endl;
    cout << "AFTER: c = " << c << endl;

    cout << endl;
    c = 0;
    cout << "BEFORE: a = " << a << endl;
    cout << "BEFORE: c = " << c << endl;
    cout << "c = ++a; " << endl;
    c = ++a;
    cout << "AFTER: a = " << a << endl;
    cout << "AFTER: c = " << c << endl;

    return 0;

}