Compilare: user.cpp: In function ‘void cit(int&, FILE*)’: user.cpp:22: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp:25: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp:32: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘void ReadData()’: user.cpp:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void WriteData()’: user.cpp:99: warning: unused variable ‘XX’ user.cpp:99: warning: unused variable ‘YY’ user.cpp:84: warning: ‘X’ may be used uninitialized in this function user.cpp:84: warning: ‘Y’ may be used uninitialized in this function