Something

//gcc -std=gnu99 -o test -test.c//        test.c#include <stdlib.h>#include <stdio.h>#include <errno.h>#include <unistd.h>int main(){        int i;        pid_t holic;        pid_t zakaznik;        holic = fork();        if(holic < 0){                printf("Error occoured with fork()\n");                exit(99);        }        else if (holic == 0){                printf("barber\n");                exit(0);        }        for (i = 0; i < 9; i++){                        zakaznik = fork();                        if (zakaznik < 0){                                printf("Error occoured with fork()\n");                                exit(99);                        }                        else if(zakaznik== 0){                                printf("customer %d\n", i);                                exit(0);                        }        }               return 0;}