Compilare: user.c: In function 'distanta': user.c:10: warning: implicit declaration of function 'abs' user.c: In function 'verificare': user.c:15: warning: unused variable 't' user.c:15: warning: unused variable 'z' user.c: In function 'main': user.c:49: warning: format '%d' expects type 'int', but argument 3 has type 'long int' user.c:75:2: warning: no newline at end of file