Compilare: user.cpp: In function ‘int getNr()’: user.cpp:40:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(crChar < len && isDigit[s[crChar]] == 0) ^ user.cpp:44:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(crChar < len && isDigit[s[crChar]] == 1) ^ user.cpp: In function ‘void readFile()’: user.cpp:58:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &n, &k); ^ user.cpp:66:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &nr); ^ user.cpp: In function ‘void solve()’: user.cpp:137:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", s); ^