Arrays and Functions

Lab C Beginner 10 points

Write int sum(int *a, int n) and double average(int *a, int n). Read an array and print both (average with 2 decimals).

Input

Line 1: n. Line 2: n integers.

Output

Two lines.

Example

Input

4
1 2 3 4

Output

10
2.50

Sample input available Sample output available

Editor

Hints

Pass the array (it becomes a pointer) and its length.

Solution explanation

Functions can use pointer parameters with normal a[i] indexing.

Show solution

#include <stdio.h>

int sum(int *a, int n) {
    int s = 0;
    for (int i = 0; i < n; i++) s += a[i];
    return s;
}

double average(int *a, int n) {
    return (double) sum(a, n) / n;
}

int main() {
    int n, a[100];
    scanf("%d", &n);
    for (int i = 0; i < n; i++) scanf("%d", &a[i]);
    printf("%d\n%.2f\n", sum(a, n), average(a, n));
    return 0;
}

Output

Answer