#include <sys/types.h>

#include <sys/ipc.h>

#include <sys/shm.h>

#include <stdio.h>

#include <errno.h>

#include <stdlib.h>

int main()

{

char *code;

int shmid;

int new = 1;

char pathname[] = "task2_w.c";

key_t key;

FILE *file = fopen(pathname, "r");

fseek(file, 0L, SEEK_END);

int len = ftell(file);

int* size;

if((key = ftok(pathname,0)) < 0){

printf("Can\'t generate key\n");

exit(-1);

}

if((shmid = shmget(key, sizeof(int) + len * sizeof(char), 0)) < 0) {

printf("Can\'t find shared memory\n");

exit(-1);

}

if((size = (int *)shmat(shmid, NULL, 0)) == (int *)(-1)){

printf("Can't attach shared memory\n");

exit(-1);

}

len = *size;

code = (char*)(size + 1);

for (int i = 0; i < len; ++i) {

putchar(code[i]);

}

if(shmdt(size) < 0){

printf("Can't detach shared memory\n");

exit(-1);

}

if (shmctl(shmid, IPC_RMID, NULL) < 0) {

printf("Can't delete shared memory\n");

}

return 0;

}