// Week 3 Lecture 2 example
// Arrays of integers
// Create an array of ints
// Print them out
// Find the sum
// Find the average
// Print the even ones
// Multiply all elements by 10
// Create another array scan them in

#include <stdio.h>

#define SIZE_NUMBERS 6
#define SIZE_MORE 4
#define SIZE_ZEROS 10

int main(void) {
    int numbers[] = {2, 5, -8, 4, 1, 9};
    //int more_numbers[SIZE_MORE];
    //int zeros[SIZE_ZEROS] = {};

    // Print the array (while then convert to for)
    int i = 0;
    while (i <SIZE_NUMBERS) {
        printf("%d ",numbers[i]);
        i++;
    }
    printf("\n");

    // Find the sum
    int sum = 0;
    i = 0;
    while (i <SIZE_NUMBERS) {
        sum = sum + numbers[i];
        i++;
    }

    // Find the average
    double average = (double)sum/SIZE_NUMBERS;

    printf("Sum %d Average %lf\n", sum, average);
    
    // Print the even ones

    // Multiply all elements by 10
     i = 0;
    while (i <SIZE_NUMBERS) {
        numbers[i] = numbers[i] * 10;
        i++;
    }

    i = 0;
    while (i <SIZE_NUMBERS) {
        printf("%d ",numbers[i]);
        i++;
    }
    printf("\n");

    //scan numbers into the second array
    printf("Enter %d numbers: ", SIZE_NUMBERS);
    i = 0;
    while (i <SIZE_NUMBERS) {
        scanf("%d", &numbers[i]);
        i++;
    }

    i = 0;
    while (i <SIZE_NUMBERS) {
        printf("%d ",numbers[i]);
        i++;
    }
    printf("\n");
    

    return 0;
}