OR-Rjesenja Nekih Zadataka-zad1

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

int NCifara (int n) {
    int brojac=0;
    while (n!=0) {
            brojac++;
     n/=10;
    }
    return brojac;
}

float Suma (int*niz, int vel, int n) {
    int i, brojac=0;
    float suma=0;
    if (n<1 || n>7) return 0;
     for (i=0; i<vel; i++) {
            if (NCifara(niz[i])==n) {
                    suma+=niz[i];
                    brojac++;

            }}
            return suma/brojac;
}

int main () {
    int niz[7]={5, 231, 18, 7801, 409, 313, 22, 17};
    printf("%.2f", Suma(niz,7,3));
    return 0;
}