Eroare de compilare: user.c: In function 'update_sourceDist': user.c:152: warning: unused variable 'a2' user.c:152: warning: unused variable 'a1' user.c: In function 'dijkstra': user.c:166: warning: unused variable 'h' user.c: In function 'main': user.c:258: warning: implicit declaration of function 'getch' user.c:259: warning: control reaches end of non-void function user.c: In function 'minim': user.c:138: warning: 'index' may be used uninitialized in this function /tmp/cc6XxGs0.o: In function `main': user.c:(.text+0xb95): undefined reference to `getch' collect2: ld returned 1 exit status