cpp-calculator-oops/calculator.cpp at main · RuchiSheoran/cpp-calculator-oops · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
#include <iostream>
using namespace std;

class Calculator {
public:
    double add(double a, double b) {
        return a + b;
    }

    double subtract(double a, double b) {
        return a - b;
    }

    double multiply(double a, double b) {
        return a * b;
    }

    double divide(double a, double b) {
        if (b == 0) {
            cout << "Error: Division by zero not allowed." << endl;
            return 0;
        }
        return a / b;
    }
};

int main() {
    Calculator calc;   // object of class

    double num1, num2;
    char op;

    cout << "Enter first number: ";
    cin >> num1;

    cout << "Enter operator (+, -, *, /): ";
    cin >> op;

    cout << "Enter second number: ";
    cin >> num2;

    switch (op) {
        case '+':
            cout << "Result = " << calc.add(num1, num2);
            break;

        case '-':
            cout << "Result = " << calc.subtract(num1, num2);
            break;

        case '*':
            cout << "Result = " << calc.multiply(num1, num2);
            break;

        case '/':
            cout << "Result = " << calc.divide(num1, num2);
            break;

        default:
            cout << "Invalid operator!";
    }

    return 0;
}