Compilare: user.cpp: In function 'void read()': user.cpp:22: warning: format '%s' expects type 'char*', but argument 3 has type 'char (*)[260]' user.cpp: In function 'int eval(char*)': user.cpp:91: warning: operation on 'vf' may be undefined user.cpp:91: warning: operation on 'vf' may be undefined user.cpp:92: warning: operation on 'vf' may be undefined user.cpp:92: warning: operation on 'vf' may be undefined user.cpp:93: warning: operation on 'vf' may be undefined user.cpp:93: warning: operation on 'vf' may be undefined user.cpp: In function 'void itoaflo(int, char*)': user.cpp:99: warning: unused variable 'y'