Compilare: user.cpp:1:18: warning: extra tokens at end of #include directive user.cpp:2:20: warning: extra tokens at end of #include directive user.cpp: In function ‘int main()’: user.cpp:37: warning: unused variable ‘j’ user.cpp:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result