threads doesn't show words in text file

hey every body i'm new and i have questions.

in my os lab course we're working on two threads and the program was about to type numbers and words one thread for numbers and another for words and cuz it doesn't space for showing all of them in terminal we transfered it into a txt fill but in txt file only the numbers where shown and i want to khnow why?

please help me. thank you.

Hi,

Welcome to LQ!

Not enough information to aid you with your problem. Post a sample of the output data along with what you have attempted to complete the action on the data.

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hey
i wrote this program:
#include <pthread.h>
#include <stdio.h>

struct char_print_parms
{

char character;

int count;
};


void* char_print (void* parameters)
{
struct char_print_parms* p = (struct char_print_parms*) parameters;
int i;
for (i = 0; i < p->count; ++i)
fputc (p->character, stderr);
return NULL;
}

int main ()
{
//int j;
//for (j = 0; j<200000;j++)
////{
//printf (" %d ",j);
//}
pthread_t thread1_id;
pthread_t thread2_id;
struct char_print_parms thread1_args;
struct char_print_parms thread2_args;

thread1_args.character = '1';
thread1_args.count = 30000;
pthread_create (&thread1_id, NULL, &char_print, &thread1_args);

thread2_args.character = 'a';
thread2_args.count = 20000;
pthread_create (&thread2_id, NULL, &char_print, &thread2_args);

pthread_join (thread1_id, NULL);

pthread_join (thread2_id, NULL);
return 0;
}
then in this program you will have print of number (1)
for 30000 times and word (a) for 20000 times but if you want to have them in text file the word (a) doesn't shown why???????????????????
help me please.