basic-c/sources/arrayaverage.c

#include <stdio.h>
#include <stdlib.h>

void printArray(int* array, int length) {
    int i;
    for (i = 0; i < length; i++)
        printf("%d ", array[i]);
    printf("\n");
}

float average(int* array, int length) {
    float result = 0;
    int i;
    for (i = 0; i < length; i++)
        result += *(array + i);
    return result / length;
}

int main(int argc, const char** argv) {
    #define ARRAY_LENGTH 10
    int arr[ARRAY_LENGTH];
    int i = 0;
    float result = 0;
    while (i < ARRAY_LENGTH) {
        printf("Enter value %d:", i);
        scanf("%d", &arr[i]);
        i++;
    }
	printf("Our array is: ");
    printArray(arr, ARRAY_LENGTH);
    printf("And the average is: %f \n",
           average(arr, ARRAY_LENGTH));
    return 0;
}