Compilare: user.cpp: In function ‘void ReadData()’: user.cpp:21: warning: right-hand operand of comma has no effect user.cpp:20: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void WriteData()’: user.cpp:66: warning: comparison between signed and unsigned integer expressions user.cpp:61: warning: ‘X’ may be used uninitialized in this function user.cpp:61: warning: ‘Y’ may be used uninitialized in this function