Compilare: user.cpp:93:2: warning: no newline at end of file user.cpp: In function 'int main()': user.cpp:46: warning: operation on 'ymax' may be undefined user.cpp:59: warning: comparison between signed and unsigned integer expressions user.cpp:61: warning: comparison between signed and unsigned integer expressions user.cpp:90: warning: format '%.6Lf' expects type 'long double', but argument 2 has type 'double'