tu wbijaj jak cos to lab 7 zad3

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <pthread.h>

#include <string.h>

#include <sys/file.h>

#include <stdlib.h>

#include <stdio.h>

#include <unistd.h>

#include <time.h>





void *fun_watek1(void * p);

void *fun_watek2(void * p);

struct liczby{

int x;

int y;

};



int retval;



struct liczby message;



int main() {

message.x = 4;

message.y = 2;



pthread_t watek1;

pthread_t watek2;



pthread_create(&watek1, NULL, fun_watek1, (void *)&message);

pthread_create(&watek2, NULL, fun_watek2, (void *)&message);



pthread_join(watek1, NULL);

printf("%d + %d = %d\n",message.x, message.y, retval);



pthread_join(watek2, NULL);

printf("%d - %d = %d\n",message.x, message.y, retval);





return0;

}



void *fun_watek1(void * p) {

printf("Watek 1: %lu, PID: %d\n", pthread_self(), getpid());



struct liczby * l = (struct liczby*) p;

retval = l->x+l->y;

return0;

}



void *fun_watek2(void * p) {

printf("Watek 2: %lu, PID: %d\n", pthread_self(), getpid());



struct liczby * l = (struct liczby*) p;

retval = l->x-l->y;

return0;

}