07. Operations Between Numbers

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

int main(){

    int n1, n2 ;
    cin >> n1 >> n2 ;

    char sign ;
    cin >> sign ;

    int result ;

    if (sign == '+'){
        result = n1 + n2 ;
        if (result % 2 == 0){
            cout << n1 << " + " << n2 << " = " << result << " - even" << endl;
        }else {
            cout << n1 << " + " << n2 << " = " << result << " - odd" << endl;
        }
    }
    if (sign == '-'){
        result = n1 - n2 ;
        if (result % 2 == 0){
            cout << n1 << " - " << n2 << " = " << result << " - even" << endl;
        }else {
            cout << n1 << " - " << n2 << " = " << result << " - odd" << endl;
        }
    }

    if (sign == '*'){
        result = n1 * n2 ;
        if (result % 2 == 0){
            cout << n1 << " * " << n2 << " = " << result << " - even" << endl;
        }else {
            cout << n1 << " * " << n2 << " = " << result << " - odd" << endl;
        }
    }


    /// Division !

    if (sign == '/'){
        if (n2 == 0){
            cout << "Cannot divide " << n1 << " by zero" << endl;
        }else {
            double result = 1.0 * n1 / n2 ;
            cout.setf(ios::fixed);
            cout.precision(2);
            cout << n1 << " / " << n2 << " = " << result << endl;
        }
    }

    /// div %

    if (sign == '%'){
        if (n2 == 0){
            cout << "Cannot divide " << n1 << " by zero" << endl;
        }else {
            cout << n1 << " % " << n2 << " = " << n1 % n2 << endl;
        }
    }

    return 0;
}