Write a program C++ Write a program that calculates the average of a group of te

Question

Write a program C++

Write a program that calculates the average of a group of test scores, where the lowest score in the group is dropped. It should use the following functions: • void getScore() should ask the user for a test score, store it in a reference param- eter variable, and validate it. This function should be called by main() once for each of the five scores to be entered. • void calcAverage() should calculate and display the average of the four highest scores. This function should be called just once by main() and should be passed the five scores. • int findLowest() should find and return the lowest of the five scores passed to it. It should be called by calcAverage , which uses the function to determine which of the five scores to drop. Input Validation: Do not accept test scores lower than 0 or higher than 100.

Explanation / Answer

Here is the C++ Code for the above given testscores scenario:

#include <iostream>

using namespace Testscores;

// These are the Function Prototypes

void getScore(int &);

void calcAverage(int, int, int, int, int);

int findLowest(int, int, int, int, int);

int main()

{

int Score1, Score2, Score3, Score4, Score5;

// It displays the program introduction that it calculates the average of five scores

cout << " This program calculates the average of five Scores. ";

// we can call getScore function once for each of the five scores

getScore(Score1);

getScore(Score2);

getScore(Score3);

getScore(Score4);

getScore(Score5);

//And also we can call calcAverage and pass the five scores

calcAverage(Score1, Score2, Score3, Score4, Score5);

return 0;

}

void getScore(int &Score)

{

do

{

cout << "Enter a test score: ";

cin >> Score;

if (Score < 0 || Score > 100)

cout << " Invaild test score! "

<< "Test score must be greater than 0 and less than 100. ";

}

} while(Score < 0 || Score > 100);

}

void calcAverage(int Score1, int Score2, int Score3, int Score4, int Score5)

{

int Lowest;          //it gives the lowest test score

double Avg;     // it gives the average of the four highest test scores

//Here we are calling the function findLowest

Lowest = findLowest(Score1, Score2, Score3, Score4, Score5);

if (Lowest == Score1)

//it caculates average of four highest test scores

Avg = (Score2 + Score3 + Score4 + Score5)/4;

else if(Lowest == Score2)

Avg = (Score1 + Score3 + Score4 + Score5)/4;

else if(Lowest == Score3)

Avg = (Score2 + Score1 + Score4 + Score5)/4;

else if(Lowest == Score4)

Avg = (Score2 + Score3 + Score1 + Score5)/4;

else

Avg = (Score2 + Score3 + Score4 + Score1)/4;

//it display average

cout << " The average of the four highest scores is "

<< Avg << ". ";

}

int findLowest(int Score1, int Score2, int Score3, int Score4, int Score5)

{

if (Score1 < Score2 && Score1 < Score3 && Score1 < Score4 &&

Score1 < Score5)

return Score1;

else if (Score2 < Score1 && Score2 < Score3 && Score2 < Score4 &&

    Score2 < Score5)

return Score2;

else if (Score3 < Score2 && Score3 < Score1 && Score3 < Score4 &&

Score3 < Score5)

return Score3;

else if (Score4 < Score2 && Score4 < Score3 && Score4 < Score1 &&

Score4 < Score5)

return Score4;

else

return Score5;  

}

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