Compilare: user.cpp: In function ‘void load()’: user.cpp:17: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:19: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘bool compare(punct, punct)’: user.cpp:72: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘void minim()’: user.cpp:24: warning: ‘tz’ may be used uninitialized in this function