This is the question for my lab. Using the code below, complete the code and run the program. The following is the code to be used:

This is the question for my lab.

Using the code below, complete the code and run the program.

The following is the code to be used:

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

// from the keyboard and then calculates and outputs 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;

// Function prototypes

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( void )

{

  int GradeAray[100]; + // an integer array of 100 elements

  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 >> GradeAray [pos];

while (GradeAray [pos] != -99)

{

// Fill in the code to read the grades

}

numberOfGrades = _________; // Fill blank with appropriate identifier hint: pos is last grade in

// call the function to find average      

avgOfGrades = findAverage(GradeAray, 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 GradeAray, 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 GradeAray, int size)

{

  // Fill in the code for this function

 }

This is my code. I'm not sure what other things I need to write but I feel like I'm doing wrong. Can someone explain to me for this lab to me step by step??

#include <iostream>

#include <iomanip>

using namespace std;

const int MAXGRADE = 25;

const int MAXCHAR = 30; 

typedef char StringType30 [MAXCHAR + 1];

typedef float GradeType[MAXGRADE];

float findGradeAvg(GradeType, int);

char findLetterGrade(float);

int main ( void )

{

  stringType30 firstname, lastname;

  int numofGrades;

  GradeType grades;

  float average;

  char moreinput;

  cout << "Please input the number of grades each student will receive." << endl

  cout << "This number must be a number between 1 and " << MAXGRADE << " include" << endl

  cin >> numofGrades;

  while (numofGrades > MAXGRADE || numofGrades < 1)

  {

    cout << "Please input the number of grades for each student." << endl

       << "This number must be a number between 1 and " << MAXGRADE << "include" << endl

    cin >> numofGrades 

  }

}