Compilare: user.cpp: In function ‘void citire()’: user.cpp:12: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:15: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void intervale()’: user.cpp:33: warning: operation on ‘j’ may be undefined user.cpp: In function ‘void afisare()’: user.cpp:63: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long long int’