Elmenteni az outputot egy txt be /C programnyelv/?

Van ez a program...egy része mukodik de a:

fputs(' ',subor);

putc()

részét nem tudom jól elmenteni hibát is kiír a complinál.

#include <stdio.h>

#include <stdlib.h>

FILE *subor;

void writing();

void message();

int main(void)

{

int poschodie,bal1,bal2;

int spaces;

int height, i, j, k;

int priemer2,pen,pen2,pen3,pod;

writing();

scanf("%d", &poschodie);

//otvori subor

subor = fopen("stromcek.txt","w");

if(subor==NULL) {printf("\n Nepodarilo :(\n"); return -1; }

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

printf("\n\n\n");

for (k = 1; k <= poschodie; ++k) {

height = 2 * k + 1;

spaces = 2 * poschodie;

for (i = 0; i < height; ++i) {

for (j = 0; j < spaces; ++j)

fputs(' ',subor);

for (j = 0; j < 2 * i + 1; ++j){

bal1 = rand()%3;

bal2 = bal1 % 2;

if (bal2 == 0)

putchar('*',subor);

else

fputs('0',subor);

}

fputs('\n',subor);

--spaces;

}

}

/*........................................................*/

//vykresli pen..

priemer2 = j / 2 - 1;

for (pen = 1; pen <= 3; pen++)

{

for(pen2 = 1; pen2 <= priemer2; pen2++)

{

fprintf(subor," ");

}

////////////////////////////////////////////////

for (pen3 = 1; pen3 <= 3; pen3++)

{

fprintf(subor,"*");

}

fprintf(subor,"\n");

}

for(pen3 = 1; pen3 <= priemer2 -1; pen3++)

{

fprintf(subor," ");

}

for(pod = 1; pod <= 5; pod++)

fprintf(subor,"*");

///////////////////////////////////////////////////

fclose(subor);

printf("\n\n");

void message();

return 0;

}

/////////////////////////////////////////////////////

void writing(){

printf("zadaj poschodie: ");

}

void message(){

printf("Vas vianocny stromcek bol vykresleny do suboru.");

}