Write functions that return the following values Assume that

Write functions that return the following values. (Assume that a and n are parameters, where a is an array of int values and n is the length of the array.)
(a) The largest element in a.
(b) The average of all elements in a.
(c) The number of positive elements in a.

Solution

Solution.cpp

#include <iostream>//header file for input output function

using namespace std;//it tells the compiler to link std namespace
int largestelement(int a[],int n);//function declaration
float avgofelements(int a[],int n);//function declaration
int noofpositives(int a[],int n);//function declaration
int main()
{//main function
    int n;
    cout<<\"enter the size of the array \"<<endl;
    cin>>n;//keyboard inputting
    int a[n];
    cout<<\"enter the no of elements in the array :\"<<endl;
    for(int i=0;i<n;i++)
    {
    cin>>a[i];//keyboard inputting
    }
    largestelement(a,n);//function calling
    avgofelements(a,n);//function calling
    noofpositives(a,n);//function calling
   return 0;
}
int largestelement(int a[],int n)
{//function definition
int temp=0;
      for(int i=1;i<n;i++)
      {//largest elemnts
          if(a[i]>temp)
           temp=a[i];
    }
    cout << \"Largest element = \" << temp<<endl;
      }
float avgofelements(int arr[],int n)
{//function definition
    float avg=0;
    int sum=0;
     for(int i=0;i<n;i++)
      {//logic for avg of elements      
         sum=sum+arr[i];
    }
  
    avg=sum/n;
    cout<<\"avg of elements =\"<<avg<<endl;
    }
    int noofpositives(int a[],int n)
    { //function defintion
        int count=0;
        for(int i=0;i<n;i++)
      {//logic for positives
          if(a[i]>0)
          count++;
      }
      cout<<\"no of positives =\"<<count<<endl;
        }

output

enter the size of the array 5

enter the no of elements in the array :

10

20

30

40

50

Largest element = 50

avg of elements =30

no of positives =5