6. óra

#include <stdio.h>

#include <string.h>

#include <sys/types.h>

#define MAX_COUNT 200

#define BUF_SIZE 100

void main(void){

    pid_t pid;

    int i;

    char buf[BUF_SIZE];

    fork();

    pid = getpid();

    for(i=1; i <= MAX_COUNT; i++){

   	 sprintf(buf, "This line is from pid %D, value = %dn", pid, i);

   	 write(1, buf, strlen(buf));

    }

}

#include <stdio.h>

#include <sys/types.h>

#define MAX_COUNT 5

void ChildProcess(void);

void ParentProcess(void);

int x=5; int y=6; int z;

void main(void){

    pid_t pid;

    pid = fork();

    if(pid==0){

   	 ChildProcess();

    } else {

   	 ParentProcess();

    }

}

void ChildProcess(void){

    int i;

    for(i=1; i<= MAX_COUNT; i++) printf("This line is from child, value = %dn", i);

    printf(" *** child process is done *** n"); z=x+y;

}

void ParentProcess(void){

    int i;

    for(i=1; i<= MAX_COUNT; i++) printf("This line is from parent, value = %dn", i);

    printf(" *** parent process is done *** n"); printf("z erteke: %dn", z);

}

#include <sys/types.h> // forkhoz

#include <unistd.h>

#include <string.h>

#include <wait.h>

int main(){

    int l;

    pid_t child=fork();

    if(child<0){

   	 perror("hiba");

    } else {

   	 if(child>0){

   		 //wait(&i);

   		 while(waitpid(child, &l, WNOHANG)==0){

   			 printf("Meg varok a gyerekekren");

   			 sleep(1);

   		 }

   		 printf("%st pid-szam: %in", "szulo ", getpid());

   	 } else {

   		 sleep(5);

   		 printf("%st pid-szam: %in", "Gyerek ",getpid());

   	 };

    };

}