Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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main.cpp:
#include <iostream>
#include <iomanip>
#include "Calculator.h"
using namespace std;
int main() {
Calculator calc;
double num1;
double num2;
cin >> num1;
cin >> num2;
cout << fixed << setprecision(1);
// 1. The initial value
cout << calc.GetValue() << endl;
// 2. The value after adding num1
calc.Add(num1);
cout << calc.GetValue() << endl;
// 3. The value after multiplying by 3
calc.Multiply(3);
cout << calc.GetValue() << endl;
// 4. The value after subtracting num2
calc.Subtract(num2);
cout << calc.GetValue() << endl;
// 5. The value after dividing by 2
calc.Divide(2);
cout << calc.GetValue() << endl;
// 6. The value after calling the clear() method
calc.Clear();
cout << calc.GetValue() << endl;
return 0;
}
Calculator.h:
#ifndef CALCULATORH
#define CALCULATORH
class Calculator {
public:
// TODO: Declare default constructor
// TODO: Declare member functions -
// Add(), Subtract(), Multiply(), Divide(), Clear(), GetValue()
private:
// TODO: Declare private data member - value
};
#endif
Calculator.cpp:
#include <iostream>
#include "Calculator.h"
using namespace std;
// TODO: Define default constructor
// TODO: Define member functions -
// Add(), Subtract(), Multiply(), Divide(), Clear(), GetValue()
Transcribed Image Text:9.37 LAB: Calculator class
Given main(), complete the Calculator class (in files Calculator.h and Calculator.cpp) that emulates basic functions of a calculator: add,
subtract, multiple, divide, and clear. The class has one private data member called value for the calculator's current value. Implement the
following constructor and public member functions as listed below:
• Calculator() - default constructor to set the data member to 0.0
• void Add(double val) - add the parameter to the data member
• void Subtract(double val) - subtract the parameter from the data member
• void Multiply(double val) - multiply the data member by the parameter
• void Divide(double val) - divide the data member by the parameter
• void Clear() - set the data member to 0.0
• double GetValue() - return the data member
Given two double input values num1 and num2, the program outputs the following values:
1. The initial value of the data member, value
2. The value after adding num1
3. The value after multiplying by 3
4. The value after subtracting num2
5. The value after dividing by 2
6. The value after calling the clear() method
Ex: If the input is:
10.0 5.0
the output is:
0.0
10.0
30.0
25.0
12.5
0.0
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