Question

Write a program that will do the following.

• The main function should ask the user how many numbers it will read in.
• It will then create an array of that size.
• Next, it will call a function that will read in the numbers and fill the array (fillArray). Pass the array that was made in themain function as a parameter to this function. Use a loop that will read numbers from the keyboard and store them in the array. This will be a void function, since it changes the contents of the array but does not return a separate result.
• Next, the main function will call another function that will find the average of the array values (averageArray). Pass the array as a parameter to this function. It will use a loop to add the numbers in the array to calculate the total. After the loop is finished, divide the total by the number of array elements to get the average. Return this average to themain function. The main function will print the average.
• Next, the main function will call a function named printArray that displays the contents of the array before they are sorted.
• Next, the main function will call another void function to sort the entire array (sortArray).
• Finally, from the main function, call printArray to print the contents of the sorted array

language: C++

Answer 1

Code -

#include <iostream>
#include <array>

using namespace std;

//function to fill the array , pass array name as parameter and size of the array
void fillArray(int a[],int n){
int size = n;
//iterate throught array to fill it
for(int i = 0; i < size ;i++){
//ask value from user and stor in array
cout<<"\nEnter value of "<<(i+1)<<" element ";
cin>>a[i];
}
  
}
//find the average of the array
int averageArray(int a[],int n){
//variable declare
int sum = 0;
//iterate throught array and calculate the sum
for(int i = 0; i < n ;i++){
sum+=a[i];
}
//return the sum/n ie the avergae value
return sum/n;
}
//print the array value
void printArray (int a[],int n){
//iterate through the array and print the iterated values
for(int i = 0; i < n ;i++){
cout<<"\nValue of "<<(i+1)<<" element is "<<a[i];
}
}
//function to swap number used in sorting array
void swapNumber(int *a, int *b)
{
int temp = *a;
*a = *b;
*b = temp;
}
//function to sort array , used bubble sort here to sort it   
void sortArray(int a[], int n)
{
int i, j;
for (i = 0; i < n-1; i++)   

for (j = 0; j < n-i-1; j++)
if (a[j] > a[j+1])
swapNumber(&a[j], &a[j+1]);
}

int main()
{
int n;
//ask user to numbers of element in array
cout<<"How many numbers it will read in ?";
cin>>n;
//initialize the array
int a[n];
//fill the array
fillArray(a,n);
//find the average
int avg = averageArray(a,n);
cout<<"\n Average is "<<avg;
//function to print the array
printArray(a,n);
//function to sort the arrya
sortArray(a,n);
cout<<"\n";
printArray(a,n);
return 0;
}

Screenshots -