Compilare: user.cpp: In function ‘void getNr()’: user.cpp:184:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(isDigit[s[crChar]] == 1) ^ user.cpp: In function ‘void readFile()’: user.cpp:52:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", s); ^ user.cpp: In function ‘void nthElement(int, int, int)’: user.cpp:87:5: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow] while(st < dr) ^