CSCI/CMPE 1370 homework:
Create a new class called Calculator. A calculator should be able to add, subtract, multiply, divide and clear. Test your calculator by writing a main program incorporating the test code below:
Calculator mycalc;
mycalc.clear();
mycalc.add(4.52);
mycalc.add(3.789);
mycalc.divide(2.6);
mycalc.multiply(3.12);
mycalc.subtract(2.678);
cout << mycalc.display() << endl; // prints out "7.2928"
mycalc.clear();
mycalc.add(5.0);
cout << mycalc.display() << endl; // prints out "5"
//advanced stuff #1: add a constructor
Calculator calc1;
cout << calc1.display() << endl; //prints out 0
//advanced stuff #2: add a parameterized constructor
Calculator calc2(5);
cout << calc2.display() << endl; //prints out 5
//The remaining portions of this assignment are intended for
//students that are shooting for an ‘A’ in the course.
//Before messing with the stuff below, be sure you have mastered
//the material above.
//advanced stuff #3: Define calculator addition (overload the '+' operator) (see: http://lmgtfy.com/?q=+c%2B%2B+operator+overloading)
Calculator calc3(7);
calc1 = calc2 + calc3;
cout << calc1.display() << endl; //prints out 12
//advanced stuff #4: Create an 'undo' method for the calculator
mycalc.undo();
mycalc.undo();
cout << mycalc.display()<< endl; //prints out 7.2928
//advanced stuff #5: Create a 'redo' method for the calculator
mycalc.redo();
mycalc.redo();
cout << mycalc.display()<< endl; //prints out 5
