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#include <iostream>
using namespace std;

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main( int argc, char ** argv ) {
    float a = 0, b = 0, add = 0, sub = 0, multi = 0, div = 0;
    char cont;
    int menu = 0;
    do {
        cout << "Hello user ! I am simple calculator, please choose an action.\n1.Addition\n2.Substraction\n3.Multiplication\n4.Division\n5.Exit\n";
        cin >> menu;
        switch( menu ) {
        case 1:
            cout << "You have chosen addition, please enter first value: ";
            cin >> a;
            cout << "\nPlease enter second value: ";
            cin >> b;
            add = a + b;
            cout << "\nSum of your value is : " << add;
            cout << endl << "Do you want to continue? If so, type Y/y, otherwise type any other letter to break" << endl;
            cin >> cont;
            system( "CLS" );
            break;
        case 2:
            cout << "You have chosen substraction, please enter first value: ";
            cin >> a;
            cout << "\nPlease enter second value: ";
            cin >> b;
            sub = a - b;
            cout << "\nSubstraction of your value is: " << sub;
            cout << endl << "Do you want to continue? If so, type Y/y, otherwise type any other letter to break" << endl;
            cin >> cont;
            system( "CLS" );
            break;
        case 3:
            cout << "You have chosen multiplication, please enter first value: ";
            cin >> a;
            cout << "\nPlease enter second value: ";
            cin >> b;
            multi = a * b;
            cout << "\nMultiplication of your value is: " << multi;
            cout << endl << "Do you want to continue? If so, type Y/y, otherwise type any other letter to break" << endl;
            cin >> cont;
            system( "CLS" );
            break;
        case 4:
            cout << "You have chosen division, please enter first value: ";
            cin >> a;
            cout << "\nPlease enter second value: ";
            cin >> b;
            if( b == 0 ) {
                cout << "You can't divide by 0!";
                cout << endl << "Do you want to continue? If so, type Y/y, otherwise type any other letter to break" << endl;
                cin >> cont;
                system( "CLS" );
                break;
            }
            else
                 div = a / b;
           
            cout << "\nDivision of your value is: " << div;
            cout << endl << "Do you want to continue? If so, type Y/y, otherwise type any other letter to break" << endl;
            cin >> cont;
            system( "CLS" );
            break;
        case 5:
            cout << "Thanks for using this calculator! See you again!";
            return 0;
        }
       
    }
    while( cont == 'Y' || cont == 'y' );
   
    cout << "Thanks for using this calculator! See you again!";
    return 0;
}