Answered Essay: Implement the TestScore class in three files, .cpp and .h . In this c++ program validate that t

Implement the TestScore class in three files, .cpp and .h . In this c++ program validate that the numbers can not be negative, and must be within the range [0-100]. Implement your validation using try / catch.

Design TestScores class that has member variables to hold three test scores. The class should have constructor, accesor, and mutator functions for the test score fields and a member function that returns the average of the test scores. Demonstrate the class by writing a separate program that creates an instance of the class. The program should ask the user to enter three test scores, which are stored in the TestScoresobject. Then the program should display the average of the scores, as reported by the TestScors object.

Expert Answer

 

//Note save below code with the name testscore.h

#ifndef TESTSCORE_H

#define TESTSCORE_H

class TestScore

{

private:

double score1;

double score2;

double score3;

public:

TestScore(int num1 = 0, int num2 = 0, int num3 = 0);

void setScore1(int num);

void setScore2(int num);

void setScore3(int num);

double getScore1();

double getScore2();

double getScore3();

double average();

};

#endif // !TESTSCORE_H

//—————————————————————————————————–

//save below code with name testscore.cpp

#include “testscore.h”

#include <iostream>

TestScore::TestScore(int num1, int num2, int num3)

{

try

{

if (num1 < 0 || num2 < 0 || num3 < 0 || num1 > 100 || num2 > 100 || num3 > 100)

{

throw “Invalid test score !!”;

}

score1 = num1;

score2 = num2;

score3 = num3;

}

catch (char* message)

{

std::cout << message << std::endl;

exit(1);

}

}

void TestScore::setScore1(int num)

{

try

{

if (num < 0 || num > 100)

{

throw “Invalid number !!”;

}

score1 = num;

}

catch (char* message)

{

std::cout << message << std::endl;

exit(1);

}

}

void TestScore::setScore2(int num)

{

try

{

if (num < 0 || num > 100)

{

throw “Invalid number !!”;

}

score2 = num;

}

catch (char* message)

{

std::cout << message << std::endl;

exit(1);

}

}

void TestScore::setScore3(int num)

{

try

{

if (num < 0 || num > 100)

{

throw “Invalid number !!”;

}

score3 = num;

}

catch (char* message)

{

std::cout << message << std::endl;

exit(1);

}

}

double TestScore::getScore1()

{

return score1;

}

double TestScore::getScore2()

{

return score2;

}

double TestScore::getScore3()

{

return score3;

}

double TestScore::average()

{

return (score1 + score2 + score3) / 3;

}

//=———————————————————————————————-

//below is the main code to test our class you can save this code with anyname.cpp

#include “testscore.h”

#include <iostream>

using namespace std;

//Note

//you can design your own exception handling class

//and can do what you want according to your need

//I designed it to display an error message

int main()

{

TestScore class1(70,80,90);

cout << class1.average() << endl;

TestScore class2;

class2.setScore1(55);

class2.setScore2(65);

class2.setScore3(75);

cout << class2.average() << endl;

TestScore class3(120, 10, 13);

cout << class3.average() << endl;

return 0;

}

//Sample output

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