Compilare: user.cpp: In function ‘void read()’: user.cpp:12: warning: format ‘%d’ expects type ‘int*’, but argument 3 has type ‘unsigned char*’ user.cpp:8: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:12: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result