C : Program of declaring and initializing Array

Program :

//c program of declaring and initializing Array 

#include<stdio.h>

int main()
{
    int arr[10]= {2,4,6,8,10,12,14,16,18,20};

    printf("Array Elements :\n");

    for(int i=0; i<=9; i++)
    {
        printf("%d ", arr[i]);
    }
    printf("\n");
    return 0;
}

Output :

C : Program of calculate average of Array Elements

//c program of calculate average of Array Elements

#include<stdio.h>

int main()
{
    int arr[10]= {2,4,6,8,10,12,14,16,18,20};
    //int arr[]={10,20,30,40,50};
    int size = sizeof(arr) / sizeof(arr[0]);
    double sum = 0.0;

    for(int i=0; i<size; i++)
    {
        sum += arr[i];
    }

    double average = sum / size;

    printf("Average of array elements : %.2f\n", average);
    return 0;
}

// Output : 

Average of Array Elements : 11.00