Recreating a Function to Reflect Passing Two Arrays

[sean4fsu777]

Hello,

I have an assignment for my Intermediate C++ programming class that is coming due very soon.

I searched the C++ Forum here, and Googled help with the assignment, looked through the C++ tutorial, and the reference page here, but not the help that I am specifically looking for, but it was interesting to see how different programs were written.

(The actual assignment is below my comments/questions)

I am thinking that I need to search the getTestScores array to find the students with the highest grade. Is that correct, or do I need to search another array for the highest grade?

I am thinking how am I need to recreate the getLowest function to reflect passing the string stuNames[5] and double studGrades[5] into it. Any suggestions/tips/questions on how to do that?

I am thinking that I need to create a getHighest function to display the name of the student with the highest grade. And that I can use some of the code that is used with the getLowest function.


Array declarations to plug into the program to display the highest grade with the correct student:

string stuNames [5];
double stuGrades [5];

We’ll assume that a user has entered data for the above students in a programming class.

Find Program 7-20 (complete program down below [that I didn't code but it is a textbook example I need help with in modifying] in the text (getLowest( ) function). Recreate the function to reflect passing two arrays (declarations shown above) and the array size to the getLowest( ) function. Update the code to display the name of student with the highest grade along with the grade value. Nothing needs to be returned from function getLowest( ).

Things to consider:
• Which array will you search to find the student with the highest grade?
• Once you find the highest grade, how will you connect the grade to the associated student?

Show the updated version of the getLowest( ) function reflecting the above information and use of parallel arrays.

scores with the
// lowest score dropped.
#include <iostream>
#include <iomanip>
using namespace std;

// Function prototypes
void getTestScores(double[], int);
double getTotal(const double[], int);
double getLowest(const double[], int);

int main()
{

const int SIZE = 4; // Array size
double testScores[SIZE], // Array of test scores
total, // Total of the scores
lowestScore, // Lowest test score
average; // Average test score

// Set up numeric output formatting.
cout << fixed << showpoint << setprecision(1);

// Get the test scores from the user.
getTestScores(testScores, SIZE);

// Get the total of the test scores.
total = getTotal(testScores, SIZE);

// Get the lowest test score.
lowestScore = getLowest(testScores, SIZE);

// Subtract the lowest score from the total.
total −= lowestScore;

// Calculate the average. Divide by 3 because
// the lowest test score was dropped.
verage = total / (SIZE − 1);

// Display the average.
cout << "The average with the lowest score "
<< "dropped is " << average << ".\n";
}

void getTestScores(double scores[], int size)
{
// Loop counter
int index;

// Get each test score.
for(index = 0; index <= size − 1; index++)
{
cout << "Enter test score number "
<< (index + 1) << ": ";
cin >> scores[index];
}
}

double getTotal(const double numbers[], int size)
{
double total = 0; // Accumulator

// Add each element to total.
for (int count = 0; count < size; count++)
total += numbers[count];

// Return the total.
return total;
}

double getLowest(const double numbers[], int size)
{
double lowest; // To hold the lowest value

// Get the first array's first element.
lowest = numbers[0];

// Step through the rest of the array. When a
// value less than lowest is found, assign it
// to lowest.
for (int count = 1; count < size; count++)
{
if (numbers[count] < lowest)
lowest = numbers[count];

// Return the lowest value.
return lowest;
}

[coder777]

I am thinking that I need to search the getTestScores array to find the students with the highest grade. Is that correct, or do I need to search another array for the highest grade?

getTestScores(...) is a function not an array. So no, nothing to be changed there.

I am thinking how am I need to recreate the getLowest function to reflect passing the string stuNames[5] and double studGrades[5] into it. Any suggestions/tips/questions on how to do that?

Just pass the second array. E.g. void getLowest(const string stuNames[], const double numbers[], int size)

Using getLowest( ) to print the highest sounds rather nonsensical.

[sean4fsu777]

Thank you coder777.

Do you have any suggestions on how to reflect the array size of getLowest()?

And do you have any suggestions on how I can display the name of the student with the highest grade along with the grade value?