Compilare: user.cpp: In function ‘void read()’: user.cpp:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void write()’: user.cpp:79: warning: ‘linie’ may be used uninitialized in this function user.cpp:79: warning: ‘coloana’ may be used uninitialized in this function