#include <stdio.h>

#define NBIM 4

float favg(float *arr, int size) {
    float sum = 0; 
    for (int i = 0; i < size; i++) {
        sum += arr[i];
    }
    return sum / size;
}

int main(void) {

    float notas[NBIM];

    notas[0] = 7.5;
    notas[1] = 9.0;
    notas[2] = 8.3;
    notas[3] = 8.6;

    float avg = favg(notas, NBIM);

    puts("============");

    for (int i = 0; i < NBIM; i++)
        printf("Bim. %d: %.1f\n", i + 1, notas[i]);
    
    puts("------------");
    printf("Média : %.1f\n", avg);
    puts("============");
    
    return 0;
}