Compilare: user.cpp: In function ‘int main()’: user.cpp:106: warning: array subscript has type ‘char’ user.cpp:116: warning: array subscript has type ‘char’ user.cpp:117: warning: array subscript has type ‘char’ user.cpp:127: warning: array subscript has type ‘char’ user.cpp:128: warning: array subscript has type ‘char’ user.cpp:98: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:146: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result