计数功能始终返回至少264 C

Question

I am currently writing a program in c that is to do a few equations via functions. The possible data that is going to be read is up to 1 million two precision floating numbers excluding 0. I am getting an error when I try to count the number of numbers read into the array, but for some reason I get a default value of 264 every single time I run the program. So for instance if dont input any values I get a count of 264, 1 value 265, 2 values 266 and so on. I guess I could subtract 264 from count to get the accurate total but I want to know why this is happening and where the 264 comes from. I have attached the code I have so far below. Thank you.

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

#define N 1000000

int count_num(double numbers[]);
double sum(double numbers[]);
double max(double numbers[]);
double min(double numbers[]);
double ar_mean(double numbers[]);
double har_mean(double numbers[]);
double variance(double numbers[]);

int main(void)
{
    double numbers[N];
    int i =0;

    while(scanf("%lf.2",&numbers[i])!=EOF&&i<N)
    {
        i++;
    }

    int count=count_num(numbers);
    printf("Count: %d\n", count);
}

int count_num(double numbers[])
{
    int count=0;
    for(int i=0;i<N;i++)
    {
        if((numbers[i]!=0)&&(numbers[i]!=0.0))
        {
            count++;
        }
    }

    return count;
}

Answer 1

Both commenters, information_interchange and AnT, are correct, the uninitialized array is the cause of the problem-it contains unknown values. You need to initialize the array, either by looping and setting all elements to 0.0 or by using the construct double numbers[N] = {0.0};

Another one: your main function does not return int but has to according to ISO/IEC 9899:2011 5.1.2.2.1.