Compilare: user.cpp: In function ‘void ReadData()’: user.cpp:15: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void WriteData()’: user.cpp:74: warning: unused variable ‘XX’ user.cpp:74: warning: unused variable ‘YY’ user.cpp:59: warning: ‘X’ may be used uninitialized in this function user.cpp:59: warning: ‘Y’ may be used uninitialized in this function