#include<stdio.h>

double sum(double* n) {
	double s = 0;
	for(int i = 0; n[i] != 0; i++)
		s += n[i];
	return s;
}

int main(){
	double numbers[] = {3.14, 2.71, 8.92, 3.54, 0};

	printf("%lf\n", sum(numbers));

	return 0;
}