OR-postavke2-zad1

#include<stdio.h>
#include<math.h>

float Fja (int *niz,int vel, int br) {
    if (br<1 || br>7) return -1;
    int br_cifri=0,suma=0,brojac=0,i;
    for (i=0; i<vel;  i++ ) {
            int temp=niz[i];
    while (temp!=0) {
        br_cifri++;
        temp/=10;
    }
    if (br_cifri==br) {
        suma+=niz[i];
        brojac++;
    }
    br_cifri=0;
    }
    return suma/brojac;

    }

    int main () {
        int niz[8]={5, 231, 18, 7801, 409, 313, 22, 17};
        printf("%.2lf",Fja(niz,8,3));
        return 0;
    }