LV-13 - Fix

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

using namespace std;

template <typename dataType>
static dataType RNG(dataType from, dataType to)
{
    random_device rd;                                           // better source of seeds than time()
    mt19937 gen(rd());                                          // seed Mersenne Twister
    uniform_int_distribution<> rand(from, to);                  // range of numbers

    return rand(gen);
}

int main(void)
{
    //printf("//==================\\ ZADATAK [1] //==================\\\n");
    //int *a, br, nm = 100, nv = -100;

    //printf("Unesize zeljenu velicinu polja: ");
    //scanf("%d", &br);

    //a = (int *)malloc(br*sizeof(int));
    //if (a == NULL)
    //  return 1;

    //for (size_t i = 0; i < br; i++)
    //{
    //  a[i] = RNG<int>(-100, 100);
    //  if (a[i] < nm)
    //      nm = a[i];
    //  if (a[i] > nv)
    //      nv = a[i];
    //}
    //printf("najveci je %d, a najmanji %d\n\n", nv, nm);
    //free(a);
    //printf("//====================================================\\\n");

    //printf("\n//==================\\ ZADATAK [2] //==================\\\n");
    //double *b;
    //int rand = RNG(50, 100);
    //
    //b = (double *)malloc(br*sizeof(double));
    //if (b == NULL)
    //  return 1;

    //for (size_t i = 0; i < rand; i++)
    //{
    //  double c= 0.0, d = 1.0;
    //  b[i] = RNG<double>(c,d);
    //  if (b[i] == 1)
    //      printf("b[%d] == 1 \n", i);
    //}
    //free(b);
    //printf("//====================================================\\\n");


    printf("\n//==================\\ ZADATAK [3] //==================\\\n");

    int length = 0, space = 0;
    char *str;

    while (length > 1 && length < 500);
    {
        printf("Unesite zeljenu duljinu stringa ");
        scanf_s("%d", &length);
    }
    fseek(stdin, 0, SEEK_END);
    str = (char *)malloc((length)*sizeof(char));
    if (str == NULL)
        return NULL;

    printf_s("\nUnesite %d, znakova u string: ", length);
    do{
        fgets(str, length, stdin);
    } while (strlen(str) <= 1 && strlen(str) >= length);

    for (size_t i = 0; i < strlen(str); i++)
    {
        if (str[i] ==' ')
            space++;
    }
    printf("\Broj razmaka iznosi: %d ", space);
    free(str);
    printf("//====================================================\\\n");

    return 0;
}