How to calculate the arithmetic average of the elements of a vector with c plus plus

In this simple example, it shows how to calculate the arithmetic average of the elements of a vector. This example is useful for understanding how to generate random integers and how to use the array.

#include <iostream>

int main (int argc, char *argv[])
{ 
    // Initialize random number generator
	srand(time(NULL));
	
    // Define the length of the array
    const int LENGHT = 10;
    
    // Create an array of LENGTH elements
    int v[LENGHT];
  
      // Fill the array with random integers
      for (int i=0; i<LENGHT; i++) v[i] = (rand()%100)+1;
      
      // Showing the contents of the array
      printf("The contents of the array\n");
      for (int i=0; i<LENGHT; i++) printf("%d\t" , v[i]);
  
    // Calculating the arithmetic average of the values contained in the array
    double average = 0.0;
    
    for (int i=0; i<LENGHT; i++) average+=v[i];
    
    average = average/LENGHT;
    
    printf("\n\n");
    
    printf("The arithmetic average is: %f" , average);
    
    return 0;
}

This is the result:

The contents of the array
44    93    45    72    77    41    5    50    80    64   

The arithmetic average is: 57.100000