1209-2.c

#include <stdio.h>
#define DEBUG

double calc_array_avg(int *a, int size);
 
int main(void)
{
    int a[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
 
    double avg = calc_array_avg(a, 10);
    printf("배열의 평균 : %.1lf\n", avg);
    return 0;
}
 
double calc_array_avg(int *a, int size)
{
#ifdef DEBUG
    printf("start of calc_array_avg()...\n");
    for (int i = 0; i< size; i++)
    {
        printf("%d", a[i]);
    }
    printf("\n");
#endif
    double sum = 0;
    for (int i=0; i<size; i++) {
        sum += a[i];
#ifdef DEBUG
    printf("%d을(를) 더하는 중...\n", a[i]);
#endif
    }
    double avg = sum / size;
#ifdef DEBUG
    printf("평균=%.1lf\n", avg);
    printf("end of clac_array_avg()... \n");
 #endif
    return avg;
}