C Program to Calculate Average of an Array

#include <stdio.h>

float getAvg(int arr[], int n) {
    int sum = 0;

    // Find the sum of all elements
    for (int i = 0; i < n; i++) {
        sum += arr[i];
    }
  	
  	// Return the average
    return (float)sum / n;
}

int main() {
    int arr[] = {1, 2, 3, 4, 5};
    int n = sizeof(arr) / sizeof(arr[0]);

  	// Calculate the average of array arr
    float res = getAvg(arr, n);  
  	
    printf("%.2f\n", res);
    return 0;
}

#include <stdio.h>

float getAvg(int arr[], int n) {
    
    // If only one element left, return it
    if (n == 1) {
        return arr[0];
    }
  
    // Add the current element to the average of
  	// the remaining array
    return (arr[n - 1] + (n - 1) *
            getAvg(arr, n - 1)) / n; 
}

int main() {
    int arr[] = {1, 2, 3, 4, 5};
    int n = sizeof(arr) / sizeof(arr[0]);

    // Calculate the average
    float res = getAvg(arr, n);

    printf("%.2f", res);

    return 0;
}