Programming

#include <stdlib.h>
#include <stdio.h>
#include <process.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>

int main(int argc, char *argv[]) { 


    int i=0;
    int il_krok = atoi(argv[1]);
    
    for (i=0;i< il_krok; i++)
    {
        printf("\nProces matka: %d,PID: %d krok %d z %d\n",i+1,getpid(),i+1,il_krok);
        sleep(1);
    }

    int newPid;

    for (i=1;i<argc;i++)
    {
        newPid = fork();

        if (newPid == 0)
        {
            printf("PID nowego procesu potomnego: %d", getpid());

            int j=0;
            il_krok = atoi(argv[i+1]);

            for (j=0;j< atoi(argv[i+1]); j++)
            {
                printf("\nProces id: %d,PID: %d krok %d z %d\n",i+1,getpid(),j+1,il_krok);
                sleep(1);
            }

            return (i+1);

            int status = 0;
            int pid = wait(&status);

            printf("Proces zakonczony: PID: %d Status: %d \n",pid, WEXITSTATUS(status));
        }

        else
        {
            int status = 0;
            int pid = wait(&status);

            printf("Proces zakonczony: PID: %d Status: %d \n",pid, WEXITSTATUS(status));

        }

    }

    return EXIT_SUCCESS;
}

char *string="12345";
int value;

if(sscanf(string, "%d", &value) != 1)
{
        fprintf(stderr, "'%s' is not a number\n", string);
}