Eroare de compilare: user.cpp:2:19: conio.h: No such file or directory user.cpp: In function `int main()': user.cpp:11: warning: int format, long int arg (arg 3) user.cpp:11: warning: int format, long int arg (arg 4) user.cpp:13: warning: int format, long int arg (arg 3) user.cpp:24: error: `abs' undeclared (first use this function) user.cpp:24: error: (Each undeclared identifier is reported only once for each function it appears in.)