Question

First create the two text file given below. Then complete the main that is given. There are comments to help you. An output is also given You can assume that the file has numbers in it

Create this text file: data.txt (remember blank line at end)

Mickey 90
Minnie 85
Goofy 70
Pluto 75
Daisy 63
Donald 80

Create this text file: data0.txt (remember blank line at end)

PeterPan 18
Wendy 32
Michael 28
John 21
Nana 12

Main

#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
using namespace std;

const int MAXSIZE = 100;

// Prototypes





int main()
{
    string names[MAXSIZE];
    int ages[MAXSIZE];
    int numElements;
    string fileName;
    double averageAge;
    double median;
    char again;

    do
    {

        cout << "Enter the file name: ";
        cin >> fileName;

        // Call the function fillArray. It has the fileName, the name array and
        // the age array passed in (in that order). It returns the number of people read in
        // Description of function given below



        cout << "Before Sort" << endl;
        // Call the function printArray. It has the name array, age array and
        // the number of people passed in (in that order). 
        // Description of function given below




        // Call the function sort array. It has the name array, age array,
        // and the number of people passed in (in that order).
        // Description of function given below




        cout << "After Sort" << endl;
        // Call the function printArray. It has the name array, age array and
        // the number of people passed in (in that order). 
        // Description of function given below




        cout.setf(ios:: fixed);
        cout.precision(2);
        // Call the function findAverageAge. It has the age array and
        // the number of people passed in (in that order). It stores the value
        // that is returned in the averageAge variable declared above.
        // Description of function given below




        cout << "The average age is: " << averageAge << endl;

        // Call the function determineMedian. This function has the age array
        // and the number of people passed in (in that order). I returns
        // the median age and stores it into the variable median declared
        // above





        cout << "The median age is: " << median << endl;

        cout << endl;
        cout << "Do you want to do this again? (Y/N): ";
        cin >> again;
    } while (toupper (again) == 'Y');
    return 0;
}



// Function: sortArrays
// This function has the name array, the age array and the number 
// of elements passed in. It sorts the data by putting the ages in 
// numerical order. (Hint: the names have to stay with the person,
// so you have to do something with the name array too)





// Function: findAverageAge
// This function has the age array and the number of elements passed in.
// It computes the average of the ages in the array and returns it.





// Function: determineMedian
// This function has the ages array (which is sorted) and the number 
// of elements passed in. It returns the median grade






// Function: printArray
// This function has the name array, the age array and the number 
// of elements passed in.
// It prints the arrays in neat columns (see output)






// Function: fillArray
// This function should open the file with the name that is passed into it. It should
// then read in the names and ages and load them into the appropriate arrays. 
// Make sure you check that you don't exceed the array size.
// If the file has too many names and numbers, your program should not put the 
// extra people in the array, the array will just be full.
// This function determines the number of names and ages in the arrays
// and should return the number.
// This function should not call any other user defined functions.

Sample Output

Enter the file name: data.txt
Before Sort
Mickey         90
Minnie         85
Goofy          70
Pluto          75
Daisy          63
Donald         80
After Sort
Daisy          63
Goofy          70
Pluto          75
Donald         80
Minnie         85
Mickey         90
The average age is: 77.17
The median age is: 77.50

Do you want to do this again? (Y/N): Y
Enter the file name: data0.txt
Before Sort
PeterPan       18
Wendy          32
Michael        28
John           21
Nana           12
After Sort
Nana           12
PeterPan       18
John           21
Michael        28
Wendy          32
The average age is: 22.20
The median age is: 21.00

Do you want to do this again? (Y/N): n

***********

i used the following code:

#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
using namespace std;

const int MAXSIZE = 100;

int fillarray(string name, string names[], int ages[]){
fstream file;
string word, t, q, filename;
filename = name;
file.open(filename.c_str());
int i=0;

while (file >> names[i]>>ages[i])
{
i++;
}
return i;
}

void sorting(string name[], int age[], int l){
int temp=0;
string n;
for(int k=0;k<l;k++)
{
for(int j=k+1;j<l;j++)
{
if(age[k]>age[j]){
temp = age[j];
age[j]=age[k];
age[k]=temp;
  
n = name[j];
name[j]=name[k];
name[k]=n;
}
}
}
}

double findAverageAge(int age[], int l){
double avg=0;
int sum =0 ;
for(int i=0; i<l;i++){
sum = sum + age[i];
}
avg = (sum/(double)l);
return avg;
}

void printArray(string name[],int age[], int l)
{
for(int i=0;i<l-1;i++){
cout<<name[i]<<" "<<age[i]<<endl;
}
}

double determineMedian(int age[],int l){
double median=0;
if (l % 2 != 0)
median = (double)age[l/2];
  
median = (double)(age[(l-1)/2] + age[l/2])/2.0;
  
return median;
}
int main()
{
string names[MAXSIZE];
int ages[MAXSIZE];
int numElements;
string fileName;
double averageAge;
double median;
char again;

do
{
cout << "Enter the file name: ";
cin >> fileName;

int length = fillarray(fileName,names,ages);

cout << "Before Sort" << endl;

printArray(names,ages,length);

sorting(names,ages,length);

cout << "After Sort" << endl;

printArray(names,ages,length);
  
cout.setf(ios:: fixed);
cout.precision(2);

averageAge = findAverageAge(ages,length);

cout << "The average age is: " << averageAge << endl;

median = determineMedian(ages,length);

cout << "The median age is: " << median << endl;

cout << endl;
cout << "Do you want to do this again? (Y/N): ";
cin >> again;
} while (toupper (again) == 'Y');
return 0;
}

**********

this is what i get:

-UULELIS Lee Gerry The average age is: 39.70 The median age is: 46.50 Do you want to do this again? (Y/N): 2: Sort function 012 Compilation failed main.cpp: In function "bool testPassed (std::ofstream& main.cpp:83: 4: error: "sortArrays' was not declared in this scope sortArrays (al, a2, 6); Compilation failed main.cpp: In function Nint main() main.cpp:112:5: warning: unused variable numElements' [-Wunused-variab. 112 | int numElements; 3: findAverageAgen 4. Test Find Median

Answer 1

Given below is the code for the question. Please do rate the answer if it helped. Thank you.

#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
using namespace std;

const int MAXSIZE = 100;
int fillArray(string name, string names[], int ages[]);
void sortArrays(string name[], int age[], int l);
double findAverageAge(int age[], int l);
void printArray(string name[],int age[], int l);
double determineMedian(int age[],int l);

int main()
{
   string names[MAXSIZE];
   int ages[MAXSIZE];
   int numElements;
   string fileName;
   double averageAge;
   double median;
   char again;

   do
   {
       cout << "Enter the file name: ";
       cin >> fileName;

       int length = fillArray(fileName,names,ages);

       cout << "Before Sort" << endl;

       printArray(names,ages,length);

       sortArrays(names,ages,length);

       cout << "After Sort" << endl;

       printArray(names,ages,length);
      
       cout.setf(ios:: fixed);
       cout.precision(2);

       averageAge = findAverageAge(ages,length);

       cout << "The average age is: " << averageAge << endl;

       median = determineMedian(ages,length);

       cout << "The median age is: " << median << endl;

       cout << endl;
       cout << "Do you want to do this again? (Y/N): ";
       cin >> again;
   } while (toupper (again) == 'Y');
   return 0;
}

int fillArray(string name, string names[], int ages[]){
   fstream file;
   string word, t, q, filename;
   filename = name;
   file.open(filename.c_str());
   int i=0;

   while (file >> names[i]>>ages[i])
   {
       i++;
   }
   return i;
}

void sortArrays(string name[], int age[], int l){
   int temp=0;
   string n;
   for(int k=0;k<l;k++)
   {
       for(int j=k+1;j<l;j++)
       {
           if(age[k]>age[j]){
               temp = age[j];
               age[j]=age[k];
               age[k]=temp;
              
               n = name[j];
               name[j]=name[k];
               name[k]=n;
           }
       }
   }
}

double findAverageAge(int age[], int l){
   double avg=0;
   int sum =0 ;
   for(int i=0; i<l;i++){
       sum = sum + age[i];
   }
   avg = (sum/(double)l);
   return avg;
}

void printArray(string name[],int age[], int l)
{
   for(int i=0;i<l-1;i++){
       cout<<name[i]<<" "<<age[i]<<endl;
   }
}

double determineMedian(int age[],int l){
   double median=0;
   if (l % 2 != 0)
       median = (double)age[l/2];
   else
       median = (double)(age[(l-1)/2] + age[l/2])/2.0;
  
   return median;
}

Before Sort Mickey 90 Minnie 85 Goofy 70 Pluto 75 Daisy 63 After Sort Daisy 63 Goofy 70 Pluto 75 Donald 80 Minnie 85 The average age is: 77.17 The median age is: 77.50 Do you want to do this again? (Y/N): n