#include <iostream>
#include <string.h>
#define SIZE 1
using namespace std;

struct Number {
    int a[SIZE];
    void memset() {
        for (int i = 0; i < SIZE; i++) a[i] = 0;
    }
    Number(int flag) {
        if (flag == 1) readNumber();
    }
    void readNumber() {
        memset();
        int x;
        for (int i = 0; i < SIZE; i++) {
            cout << "Enter number: ";
            cin >> x;
            a[i] = x;
        }
    }
    void print() {
//      memset();
        for (int i = 0; i < SIZE; i++) {
            cout << " number = " << a[i] << endl;
        }
    }

    Number operator + (Number const& b) {
        Number res = Number(0);
        for (int i = 0; i < SIZE; i++) {
            res.a[i] = a[i] + b.a[i];
        }
        cout << "+";
        return res;
    }

    Number operator - (Number const& b) {
        Number res = Number(0);
        for (int i = 0; i < SIZE; i++) {
            res.a[i] = a[i] - b.a[i];
        }
        cout << "-";
        return res;
    }
};


int main() {
    Number A = Number(1);
    Number B = Number(1);
    Number C = Number(0);
    Number D = Number(0);
    D = A - B;
    D.print();
    C = A + B;
    C.print();
    return 0;
}