Question

C++, Complete this program as directed

// This program will read in a group of test scores (positive integers from 1 to 100)
// from the keyboard and then calculate and output the average score
// as well as the highest and lowest score. There will be a maximum of 100 scores.
// PLACE YOUR NAME HERE
#include <iostream>
using namespace std;
typedef int GradeType[100]; // declares a new data type:
// an integer array of 100 elements
float findAverage (const GradeType, int); // finds average of all grades
int findHighest (const GradeType, int); // finds highest of all grades
int findLowest (const GradeType, int); // finds lowest of all grades
int main()
{
GradeType grades; // the array holding the grades.
int numberOfGrades; // the number of grades read.
int pos; // index to the array.
float avgOfGrades; // contains the average of the grades.
int highestGrade; // contains the highest grade.
int lowestGrade; // contains the lowest grade.
// Read in the values into the array
pos = 0;
cout << "Please input a grade from 1 to 100, (or -99 to stop)" << endl;

cin >> grades[pos];
while (grades[pos] != -99)
{
// Fill in the code to read the grades
}
numberOfGrades = ; // Fill blank with appropriate identifier
// call to the function to find average
avgOfGrades = findAverage(grades, numberOfGrades);
cout << endl << "The average of all the grades is " << avgOfGrades << endl;
// Fill in the call to the function that calculates highest grade
cout << endl << "The highest grade is " << highestGrade << endl;
// Fill in the call to the function that calculates lowest grade
// Fill in code to write the lowest to the screen
return 0;
}
//********************************************************************************
// findAverage
//
// task: This function receives an array of integers and its size.
// It finds and returns the average of the numbers in the array
// data in: array of floating point numbers
// data returned: average of the numbers in the array
//
//********************************************************************************
float findAverage (const GradeType array, int size)
{
float sum = 0; // holds the sum of all the numbers
for (int pos = 0; pos < size; pos++)
sum = sum + array[pos];
return (sum / size); //returns the average

}

//****************************************************************************
// findHighest
//
// task: This function receives an array of integers and its size.
// It finds and returns the highest value of the numbers in the array
// data in: array of floating point numbers
// data returned: highest value of the numbers in the array
//
//****************************************************************************
int findHighest (const GradeType array, int size)
{
/ Fill in the code for this function
}
//****************************************************************************
// findLowest
//
// task: This function receives an array of integers and its size.
// It finds and returns the lowest value of the numbers in the array
// data in: array of floating point numbers
// data returned: lowest value of the numbers in the array
//
//****************************************************************************
int findLowest (const GradeType array, int size)
{
// Fill in the code for this function
}

Answer 1

Please find below the code, code screenshots and output screenshots. Please refer to the screenshot of the code to understand the indentation of the code.  Please get back to me if you need any change in code. Else please upvote

CODE:

// This program will read in a group of test scores (positive integers from 1 to 100)

// from the keyboard and then calculate and output the average score

// as well as the highest and lowest score. There will be a maximum of 100 scores.

// PLACE YOUR NAME HERE

#include <iostream>

using namespace std;

typedef int GradeType[100]; // declares a new data type:

// an integer array of 100 elements

float findAverage (const GradeType, int); // finds average of all grades

int findHighest (const GradeType, int); // finds highest of all grades

int findLowest (const GradeType, int); // finds lowest of all grades

int main()

{

    GradeType grades; // the array holding the grades.

    int numberOfGrades; // the number of grades read.

    int pos; // index to the array.

    float avgOfGrades; // contains the average of the grades.

    int highestGrade; // contains the highest grade.

    int lowestGrade; // contains the lowest grade.

   

    // Read in the values into the array

    pos = 0;

    cout << "Please input a grade from 1 to 100, (or -99 to stop)" << endl;

    cin >> grades[pos];

    while (grades[pos] != -99)

    {

        pos++; //Increment pos by 1

        cin >> grades[pos]; //Reading the grades

    }

    numberOfGrades = pos--; //pos - 1 will be the number of grades

   

    // call to the function to find average

    avgOfGrades = findAverage(grades, numberOfGrades);

    cout << endl << "The average of all the grades is " << avgOfGrades << endl;

   

    // call to the function that calculates highest grade

    highestGrade = findHighest(grades, numberOfGrades);

    cout << endl << "The highest grade is " << highestGrade << endl;

   

    // call to the function that calculates lowest grade

    lowestGrade = findLowest(grades, numberOfGrades);

    cout << endl << "The lowest grade is " << lowestGrade << endl;

   

    return 0;

}

//********************************************************************************

// findAverage

//

// task: This function receives an array of integers and its size.

// It finds and returns the average of the numbers in the array

// data in: array of floating point numbers

// data returned: average of the numbers in the array

//

//********************************************************************************

float findAverage (const GradeType array, int size)

{

    float sum = 0; // holds the sum of all the numbers

    for (int pos = 0; pos < size; pos++)

      sum = sum + array[pos];

       

    return (sum / size); //returns the average

}

//****************************************************************************

// findHighest

//

// task: This function receives an array of integers and its size.

// It finds and returns the highest value of the numbers in the array

// data in: array of floating point numbers

// data returned: highest value of the numbers in the array

//

//****************************************************************************

int findHighest (const GradeType array, int size)

{

    int highest = array[0]; // holds the highest of all the numbers. Initialize it to first element

    for (int pos = 0; pos < size; pos++){ //loop through each array elements

        if(highest < array[pos]) //if current highest is less than array element

            highest = array[pos]; //make array element as highest

    }

    return highest;

}

//****************************************************************************

// findLowest

//

// task: This function receives an array of integers and its size.

// It finds and returns the lowest value of the numbers in the array

// data in: array of floating point numbers

// data returned: lowest value of the numbers in the array

//

//****************************************************************************

int findLowest (const GradeType array, int size)

{

    int lowest = array[0];   // holds the lowest of all the numbers. Initialize it to first element

    for (int pos = 0; pos < size; pos++){ //loop through each array elements

        if(lowest > array[pos]) //if current lowest is greater than array element

            lowest = array[pos]; //make array element as lowest

    }

    return lowest;

}

OUTPUT: