Calc
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#include <iostream>
#include <string>
#include <cctype> // for tolower
using namespace std;
class Calculator
{
// You can directly init members with default values
// these members are not accessed from outside the calculator
// should be private
private:
string MenuResponse = ""; // consider this being of type char
int x = 0;
int y = 0;
int equal = 0;
public:
Calculator() {}
// get the result
int result()
{
return equal;
}
void Menu()
{
cout << "For Addition press(A)\n";
cout << "For Subtraction press(S)\n";
cout << "For Multiplication press(M)\n";
cout << "For Division press (D)\n";
cout << "- ";
cin >> MenuResponse;
switch(tolower(MenuResponse[0]))
{
case 'a':
cout << "Enter operands to add: ";
cin >> x >> y;
// save result of operation
equal = Addition();
break;
// add the other cases for 'S', 'M' and 'D'
//...
}
//...
}
// change the return value from void to
// the type result of the operation 'int'
// in this case
//void Addition()
int Addition()
{
//move all the reading up to Menu
//cout<<"Enter numbers to add\n";
//cout << "Enter the first number:\n";
//cin >> x;
//cout << "Now enter the second number:\n";
//cin >> y;
//int equals = x+y; you don't need this
return x+y;
}
// do the same as with Addition
void Subtraction()
{
cout<<"Enter numbers to sub\n";
cout << "Enter the first number:\n";
cin >> x;
cout << "Now enter the second number:\n";
cin >> y;
int equals = x-y;
cout <<"="<<equals;
}
void Multiplication()
{
cout<<"Enter numbers to mult\n";
cout << "Enter the first number:\n";
cin >> x;
cout << "Now enter the second number:\n";
cin >> y;
int equals = x*y;
cout <<"="<<equals;
}
void Division()
{
cout<<"Enter numbers to div\n";
cout << "Enter the first number:\n";
cin >> x;
cout << "Now enter the second number:\n";
cin >> y;
int equals = x/y;
cout <<"="<<equals;
}
};
int main()
{
Calculator Calc;
Calc.Menu();
cout << "Result: " << Calc.result() << endl;
// Handle this inside Menu
/******
if (Calc.MenuResponse == "A")
{
Calc.Addition();
}
else if (Calc.MenuResponse == "S")
{
Calc.Subtraction();
}
else if (Calc.MenuResponse == "M")
{
Calc.Multiplication();
}
else if (Calc.MenuResponse == "D")
{
Calc.Division();
}
else
{
}
*******/
}
Cpp
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