Compilare: user.cpp: In function ‘void read()’: user.cpp:44: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:34: warning: ‘poz’ may be used uninitialized in this function