Compilare: user.cpp: In function ‘bool check(const int&, const int&)’: user.cpp:28: warning: array subscript has type ‘char’ user.cpp:33: warning: array subscript has type ‘char’ user.cpp:38: warning: array subscript has type ‘char’ user.cpp: In function ‘int main()’: user.cpp:55: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:56: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result