Calculate Average of Numbers Using Arrays with C++

This program takes n number of element from user(where, n is specified by user), stores data in an array and calculates the average of those numbers.

Source Code to Calculate Average of Numbers Using Arrays

#include <iostream>
using namespace std;
int main(){
    int n, i;
    float num[100], sum=0.0, average;
    cout << "Enter the numbers of data: ";
    cin >> n;
    while (n>100 || n<=0)
    {
        cout << "Error! number should in range of (1 to 100)." << endl;
        cout << "Enter the number again: ";
        cin >> n;
    }
   for(i=0; i<n; ++i)
   {
      cout << i+1 << ". Enter number: ";
      cin >> num[i];
      sum+=num[i];
   }
   average=sum/n;
   cout << "Average = " << average;
   return 0;
}

Output

Enter the numbers of data: 6
1. Enter number: 45.3
2. Enter number: 67.5
3. Enter number: -45.6
4. Enter number: 20.34
5. Enter number: 33
6. Enter number: 45.6
Average = 27.69

This program calculates the average if the number of data are from 1 to 100. If user enters value of n above 100 or below 100 then, while loop is executed which asks user to enter value of n until it is between 1 and 100.