Question

8. (4 points) You are given an array, named arr, containing doubles. Write the code necessary to process this array and compute the mean of the array's contents by summing everything together and dividing by the number of contents Avoid all built-in functions to accomplish this and perform the arithmetic mechanically. It shall produce a double value representing the mean.

Answer 1

#include <iostream>

using namespace std;

int main() {
int n;
double sum=0.0,mean;
cout<<"Enter the number of elements:";
cin>>n;
double arr[n];
cout<<"\nEnter the elements: ";
for(int i=0;i<n;i++)
{
cin>>arr[i];
}
for(int i=0;i<n;i++)
{
sum=sum+arr[i];
}
  
mean=sum/n;
cout<<"\n The mean value is : "<<mean;
}

i 2 #include <iostream> using namespace std; 4- int main() { int n; double sum=0.0, mean; cout<<"Enter the number of elements: "; cin>>n; double arr[n]; cout<<"\nEnter the elements: "; for(int i=0;i<n;i++) cin>>arr[i]; for(int i=0;i<n;i++) sum=sum+arr[i]; mean=sum/n; cout<<"\n The mean value is : "<<mean; ✓ Execute Mode, Version, Inputs & Arguments GCC 8.1.0 Interactive Stdin Inputs CommandLine Arguments (94.5 6.7 8.9 3.1 9.8 Execute Execute . O Result CPU Time: 0.00 sec(s), Memory: 3348 kilobyte(s) Enter the number of elements: Enter the elements: The mean value is: 6.6