Programming

#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/wait.h>
#define max 25
#define buffdim 50

void p1();
void p2();
void wait_child();
void done(int sinal);

int main(int argc, char** argv)

{
int pid[1], i,j;

    for (i = 0; i < 2; i++)
    {

        pid[i] = fork();

        if(pid[i]==0)
        {
            if(i==0)
            {
            printf("I'm %d and i=0\n", pid[i]);
            p1();
            }
            else if (i==1)
            {
            printf("I'm %d and i=1\n", pid[i]);
            p2(argv[1]);
            }
        }
        else
        {
        printf("P0 : Created child %d\n", i + 1,pid[i]);
        }
    }
    for (j=0; j<2; j++)
    {
    wait_child();
    }

    return 0;
}

void p1()
{
    signal(SIGUSR1, done);
}

void p2(char* file_in)
{
int fd;
int a=8, c=10;

    
    printf("%d e %d.\n", a,c);
    exit(0);
}    


void wait_child()
{
    int death, status;
    death=wait(&status);
    printf("Child %d dead. Status %d.\n", death, status);
}

void done(int sinal)
{
    printf("Done\n");
}

piero@ubuntu:~$ ./correggi test_input a
P0: Created child 1
I'm 0 and i=0
P0: Created child 2
P0: Created child 2
I'm 0 and i=1
8 e 10.
Child 2457 dead. Status 0.
I'm 0 and i=1
8 e 10.
Child 2458 dead. Status 0.
Child -1 dead. Status 0.
Child 2456 dead. Status 0.
piero@ubuntu:~$