Compilare: user.cpp: In function `int main()': user.cpp:40: warning: converting to `long int' from `float' user.cpp: In function `void Lee()': user.cpp:96: warning: comparison between signed and unsigned integer expressions user.cpp:95: warning: `int x' might be used uninitialized in this function user.cpp:95: warning: `int y' might be used uninitialized in this function