Plus Minus

#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <stdbool.h>
int main(){
    int n,i;
    float p,ni,z;
    scanf("%d",&n);
    int arr[n];
    p = ni = z = 0;
    for(i = 0; i < n; i++)
    {
       scanf("%d",&arr[i]);
           if(arr[i] == 0)
            z++;
            else if(arr[i] > 0)
             p++;
            else
             ni++;
    }
    printf("%f\n%f\n%f\n",p/n,ni/n,z/n);
    return 0;
}

[/restrict]