Eroare de compilare: user.c: In function ‘main’: user.c:35:5: warning: implicit declaration of function ‘getch’ [-Wimplicit-function-declaration] getch(); ^ user.c:27:39: warning: ‘m’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fw, "%ld\n",m); ^ user.c:26:25: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(rez ==1) ^ /tmp/ccuLoMFn.o: In function `main': user.c:(.text.startup+0x179): undefined reference to `getch' collect2: error: ld returned 1 exit status