I had some defficult of programing the followingquestion, and I will be so happy

Question

I had some defficult of programing the followingquestion, and I will be so happy if you help. thank


Q1: Chapter 7, p462, #18, Use the following 2x4 array:
1, 2,3,4 5,6,7,8 Call the array num. Implement the differentfunctions as menu choices. Display a menu to the user givingthese choices. Have the program loop until the user chooses toquit. Demonstrate that each of the functions work using thefollowing test values: getTotal: num getAverage: num getRowTotal: num,1 (2nd row) getColumnTotal: num, 1 (2nd column) getHighestInRow: num, 1 (2nd row) getLowestInRow: num, 1 (2nd row) I had some defficult of programing the followingquestion, and I will be so happy if you help. thank


Q1: Chapter 7, p462, #18, Use the following 2x4 array:
1, 2,3,4 5,6,7,8 Call the array num. Implement the differentfunctions as menu choices. Display a menu to the user givingthese choices. Have the program loop until the user chooses toquit. Demonstrate that each of the functions work using thefollowing test values: getTotal: num getAverage: num getRowTotal: num,1 (2nd row) getColumnTotal: num, 1 (2nd column) getHighestInRow: num, 1 (2nd row) getLowestInRow: num, 1 (2nd row)

Explanation / Answer

// Chapter 7, ProgrammingChallenge 18
// 2D Array Operations
#include <iostream>
using namespace std;

// Constants for the arraysizes
const int ROWS = 4;
const int COLS = 5;

// Function prototypes
int getTotal(int [][COLS], int, int);
double getAverage(int [][COLS], int, int);
int getRowTotal(int [][COLS], int, int);
int getColumnTotal(int [][COLS], int, int);
int getHighestInRow(int [][COLS], int, int);
int getLowestInRow(int [][COLS], int, int);

int main()
{
   // Array with test data
   int testArray[ROWS][COLS] =
           { {1,   2, 3, 4, 5 },
            { 6,   7, 8, 9, 10 },
            { 11, 12, 13, 14, 15 },
            { 16, 17, 18, 19, 20 }
           };
  
   // Display the total of the array elements.
   cout << "The total of the array elements is"
        <<getTotal(testArray, ROWS, COLS)
        << endl;
  
   // Display the average of the array elements.
   cout << "The average value of an element is"
        <<getAverage(testArray, ROWS, COLS)
        <<endl;

   // Display the totalof row 0.
   cout << "The total of row 0 is "
        <<getRowTotal(testArray, 0, COLS)
        <<endl;

   // Display the totalof column 2.
   cout << "The total of col 2 is "
        <<getColumnTotal(testArray, 2, ROWS)
        <<endl;

   // Display thehighest value in row 2.     
   cout << "The highest value in row 2 is "
        <<getHighestInRow(testArray, 2, COLS)
        <<endl;

   // Display the lowestvalue in row 2.
   cout << "The lowest value in row 2 is "
        <<getLowestInRow(testArray, 2, COLS)
        << endl;
       
   cin.get();    
   return 0;
}

// The getTotal function returns the total ofall    
// the elements in thearray.                       
int getTotal(int array[][COLS], int rows, int cols)
{
   int total = 0;
     
   for (int row = 0; row < rows; row++)
   {
      for (int col = 0; col < cols;col++)
         total +=array[row][col];
   }
     
   return total;
}

// The getAverage function returns the averave value
// of the elements in thearray.                     
double getAverage(int array[][COLS], int rows, int cols)
{
   // Calculate the number of elements in the array.
   // Use a double so we can avoid integer division
   // later.
   double numElements = rows * cols;
  
   // Get the average of the elements.
   double average =
     getTotal(array, rows, cols) /numElements;
  
   // Return the average.
   return average;
}

// The getRowTotal function returns the total of the
// the elements in the specified row of thearray.   
int getRowTotal(int array[][COLS], int rowToTotal, int cols)
{
   int total = 0;
     
   for (int col = 0; col < cols; col++)
   {
      total += array[rowToTotal][col];
   }
     
   return total;
}

// The getColTotal function returns the total ofthe  
// the elements in the specified column of the array.
int getColumnTotal(int array[][COLS], int colToTotal, int rows)
{
   int total = 0;
     
   for (int row = 0; row < rows; row++)
   {
      total += array[row][colToTotal];
   }
     
   return total;
}

// The getHighestInRow function returns the highest  
// value in the specifiedrow.                       
int getHighestInRow(int array[][COLS], int rowToSearch, intcols)
{
   int highest = array[rowToSearch][0];
     
   for (int col = 1; col < cols; col++)
   {
      if (array[rowToSearch][col] >highest)
         highest =array[rowToSearch][col];
   }
  
   return highest;
}

// The getLowestInRow function returns thelowest    
// value in the specifiedrow.                       
int getLowestInRow(int array[][COLS], int rowToSearch, intcols)
{
   int lowest = array[rowToSearch][0];
     
   for (int col = 1; col < cols; col++)
   {
      if (array[rowToSearch][col] <lowest)
         lowest =array[rowToSearch][col];
   }
  
   return lowest;
}

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