Whitespace-string-pok1

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

void unos (char *s) {
    char c;
    while (c=getchar(), c!='\n')
        *(s++)=c;
    *s='\0';
}

int length(char *string)
{
    int len = 0;
    while(*(string++) != '\0') len++;

    return len;
}
int JeLiPraznina (char c) {
    if (c==' ' || c=='\n' || c=='\t') return 1;
    return 0;
}

int br_rijeci(char *string)
{
    int i, br=0;

    for(i = 0; i < length(string); i++)
    {
        if(string[i] != ' ')
        {

            while(i < length(string) && string[i] != ' ')
            {
               i++;
            }
            br++;
        }
    }

    return br;
}

void cut(char *string, int indeks, int len)
{
    int i;

    for(i = indeks; i <= length(string) - len; i++)
    {
        string[i] = string[i + len];
    }

}
void insert(char *string, char *word, int indeks)
{
    int i;
    for(i = length(string) + length(word); i >= indeks + length(word); i--)
    {
        string[i] = string[i - length(word)];
    }

    for(i = 0; i < length(word); i++)
    {
        string[i + indeks] = word[i];
    }
}

void Whitespace (char *s) {
    int i;
    char rijec[]=" ";
    int duz=length(s);
    int poc=0, kraj=0;
    for (i=0; i<duz; i++) {
            if (JeLiPraznina(s[i]))
               {
                poc=i;
            while (JeLiPraznina(s[i])) {
                    i++;
            }
            kraj=i;
               cut(s,poc,kraj-poc);
               insert(s,rijec,pocs);
          }

    }
}






int main () {
    char c[100];
    unos(c);
    printf("%s\n",c);
  Whitespace(c);
    printf("Nova rijec: %s",c);
    return 0;
}