Datoteka zadaca 4 od code

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#define MAX 100


//ne menuvaj!
void wtf() {
    FILE *f = fopen("text.txt", "w");
    char c;
    while((c = getchar()) != EOF) {
        fputc(c, f);
    }
    fclose(f);
}

int main()
{
    wtf();
    FILE *f;
    int i, br=0, start, n;
    char str[100];
    while(fgets(str, 100, f)!=NULL)//chitame linija
    {
        i=0;
        n=strlen(str);
        if(isalpha(str[i]))//proveruvame dali e bukva
        {
            start=0;
            while(i<n && isalpha(str[i]))
            {
              i++;
            }
             if(isupper(str[start]))//proveruvame dali e golema
            	{
               		br++;
            	}
            i++;
        }
        else
        {
            i++;
        }
    }
    fprintf(f, "%d", br);
    return 0;

}