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

typedef int (*PREDICATE)(const void*);

// ------------------------------------------------------

int filter(void* output, const void* input, int length, int item_size, PREDICATE pred)
{
    // FILL ME IN!
}

int less_than_50(const void* p)
{
    // FILL ME IN!
}

// ------------------------------------------------------
// you shouldn't have to change the stuff below here.
// you can for testing, but please put it back the way it was before you submit.

#define NUM_VALUES 10

float float_values[NUM_VALUES] =
{
    31.94, 61.50, 36.10,  1.00,  6.35,
    20.76, 69.30, 19.60, 79.74, 51.29,
};

int main()
{
    float filtered[NUM_VALUES];
    int filtered_len = filter(filtered, float_values, NUM_VALUES, sizeof(float), &less_than_50);

    printf("there are %d numbers less than 50:\n", filtered_len);

    for(int i = 0; i < filtered_len; i++)
        printf("\t%.2f\n", filtered[i]);

    return 0;
}