test.sh

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#include <time.h>
#include <semaphore.h>
//#include <sys/shm.h>
#include <fcntl.h>
//#include <errno.h>
//#include <sys/types.h>
#include <string.h>

#define N 10

typedef sem_t Semaphore;

Semaphore *synch1;

int print_my_info(int pid){
    printf("I am process: %d and my parent is: %d and my child is: %d\n", getpid(),getppid(),pid);
    return 1;
}

int main(){
  pid_t pids[N];
  srand(time(NULL));
  synch1 = sem_open("Sem1", O_CREAT | O_EXCL, 0644, 1);
  char str[80];
  strcat(str, "poo");
  for(int i=1; i<=N; i++){

    if((pids[i]=fork())<0){
      exit(1);
    }

    if((pids[i]==0)){
      char *poo = "poo";
      char t = *poo;
      //char str[80];
      strcat(poo, "foo");
      printf("%s\n",poo);
      sleep(rand() % 5);
      //sleep(rand() % 5);
      exit(0);
    }
  }

int status;
pid_t pid;
int i=N;
while (i > 0) {
  pid = wait(&status);
  printf("Child with PID %ld exited with status 0x%x.\n", (long)pid, status);
  --i;  // TODO(pts): Remove pid from the pids array.
}


  for(int i=1; i<=N; i++){
    wait(NULL);
  }
   printf("%s\n",str);
  return 0;
}
//###############String test#############
/*
#include <stdio.h>
#include <string.h>

int main () {
   char src[50];
   char *foo="bye";
   char *var="hello";
   //strcpy(src,  "This is source");
   //strcpy(dest, "This is destination");
   strcpy(src, foo);
   strcat(src, var);
   //strcat(dest, src);
   strcat(src, var);
   printf("%s\n",src);

   return(0);
}/*