Question

Make sure to create the code with the given functions, and do not overlook them, do not create your own functions. This is an assignment that I did on my own and that's passed due, therefore, for educational purposes, I am interested to know what are other ways to properly program this. Please follow instructions as I am doing my best to fully understand every crucial detail in order to become a better programmer who is able to come up with different ways of programming. Your help is highly appreciated. Make sure this is created using a menu. Thank you.

Code is for C++

const int MAX_SIZE = 100;
double theArray[MAX_SIZE];

const string INPUT_FILE = "INPUT.DAT";
const string OUTPUT_FILE = "OUTPUT.DAT";

/* Pass in the INPUT_FILE, create the file with randomly from 1 to 100 generated double value, return the number of generated elements */
void CreateDataFile(const string inputFileName, int& numberOfElements);

/* Pass in the INPUT_FILE, read all elements and store them in the partially filled array */
void ReadDataFileIntoArray(const string inputFileName, double theArray[], int numberOfElements);

/* Display all elements in the partially filled array */
void DisplayAllElementsOfArray(const double theArray[], int numberOfElements);

/* Sort the partially filled array in ascending order */
void SortArrayAscendingOrder(double theArray[], int numberOfElements);

/* Sort the partially filled array in descending order */
void SortArrayDescendingOrder(double theArray[], int numberOfElements);

/* Display the smallest and largest values of the partially filled array */
void DisplaySmallestLargestElementOfArray(const double theArray[], int numberOfElements, double& smallest, double& largest);

/* Display the calculated average of elements in the partially filled array */
void DisplayAverageOfArray(const double theArray[], int numberOfElements, double& average);

/* Write the values of the smallest, largest and calculated average to the OUTPUT.DAT */
void WriteDataFile(string outputFileName, double smallest, double largest, double average);

Answer 1

Note: The language used is C++.

Code:

#include<bits/stdc++.h>
using namespace std;

const int MAX_SIZE = 100;
double theArray[MAX_SIZE];

const string INPUT_FILE = "INPUT.DAT";
const string OUTPUT_FILE = "OUTPUT.DAT";

/* Pass in the INPUT_FILE, create the file with randomly from 1 to 100 generated double value, return the number of generated elements */
void CreateDataFile(const string inputFileName, int& numberOfElements)
{
   ofstream file;
   file.open(INPUT_FILE);
  
   srand(time(0));
  
   numberOfElements = rand()%MAX_SIZE + 1;
  
   for(int i=0;i<numberOfElements;i++){
       double random_double = ((double)rand()/RAND_MAX) * (MAX_SIZE - 1) + 1;
       file<<random_double<<"\n";
   }
  
   file.close();
}

/* Pass in the INPUT_FILE, read all elements and store them in the partially filled array */
void ReadDataFileIntoArray(const string inputFileName, double theArray[], int numberOfElements)
{
   ifstream file;
   file.open(INPUT_FILE);
  
   double num;
  
   for(int i=0;i<numberOfElements;i++){
       file>>num;
       theArray[i] = num;
   }

   file.close();
}

/* Display all elements in the partially filled array */
void DisplayAllElementsOfArray(const double theArray[], int numberOfElements)
{
   cout<<"The array elements are:\n";
   for(int i=0;i<numberOfElements;i++)
       cout<<theArray[i]<<" ";
   cout<<endl;
}

/* Sort the partially filled array in ascending order */
void SortArrayAscendingOrder(double theArray[], int numberOfElements)
{
   for(int i=0;i<numberOfElements;i++){
       int min_index = i;
       for(int j=i;j<numberOfElements;j++){
           if(theArray[j] < theArray[min_index])
               min_index = j;
       }
       swap(theArray[i], theArray[min_index]);
   }
}

/* Sort the partially filled array in descending order */
void SortArrayDescendingOrder(double theArray[], int numberOfElements)
{
   for(int i=0;i<numberOfElements;i++){
       int max_index = i;
       for(int j=i;j<numberOfElements;j++){
           if(theArray[j] > theArray[max_index])
               max_index = j;
       }
       swap(theArray[i], theArray[max_index]);
   }
}

/* Display the smallest and largest values of the partially filled array */
void DisplaySmallestLargestElementOfArray(const double theArray[], int numberOfElements, double& smallest, double& largest)
{
   smallest = theArray[0];
   largest = theArray[0];
  
   for(int i=1;i<numberOfElements;i++){
       if(theArray[i] < smallest)
           smallest = theArray[i];
   }
  
   for(int i=1;i<numberOfElements;i++){
       if(theArray[i] > largest)
           largest = theArray[i];
   }
  
   cout<<"The smallest value in the array is "<<smallest<<" and the largest value in the array is "<<largest<<"\n";
}

/* Display the calculated average of elements in the partially filled array */
void DisplayAverageOfArray(const double theArray[], int numberOfElements, double& average)
{
   double sum = 0;
   for(int i=0;i<numberOfElements;i++)
       sum += theArray[i];
  
   average = sum/numberOfElements;
  
   cout<<"The average of the array elements is "<<average<<endl;
}

/* Write the values of the smallest, largest and calculated average to the OUTPUT.DAT */
void WriteDataFile(string outputFileName, double smallest, double largest, double average)
{
   ofstream file;
   file.open(OUTPUT_FILE);
  
   file<<"The smallest element in the array is "<<smallest<<"\n";
   file<<"The largest element in the array is "<<largest<<"\n";
   file<<"The average of the array is "<<average<<"\n";
  
   file.close();
}

int main()
{
   int numberOfElements;
   double largest, smallest, average;
   CreateDataFile(INPUT_FILE, numberOfElements);
   ReadDataFileIntoArray(INPUT_FILE, theArray, numberOfElements);
  
   DisplayAllElementsOfArray(theArray, numberOfElements);
  
   SortArrayAscendingOrder(theArray, numberOfElements);
   cout<<"\nAfter sorting in ascending order\n";
   DisplayAllElementsOfArray(theArray, numberOfElements);
  
   SortArrayDescendingOrder(theArray, numberOfElements);
   cout<<"\nAfter sorting in descending order\n";
   DisplayAllElementsOfArray(theArray, numberOfElements);
  
   cout<<endl;
   DisplaySmallestLargestElementOfArray(theArray, numberOfElements, smallest, largest);
  
   cout<<endl;
   DisplayAverageOfArray(theArray, numberOfElements, average);
  
   WriteDataFile(OUTPUT_FILE, smallest, largest, average);
  
   return 0;

}

Code Snippets:

Sample Output:

Console:

OUTPUT.DAT file: