Compilare: user.cpp: In function ‘int main()’: user.cpp:47:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] isMagic[magics[1 << i]] = 1 << i; ^ user.cpp:56:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++freq[*c]; ^ user.cpp:57:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%d\n", query(freq[magics[1]], freq[magics[2]], freq[magics[4]])); ^ user.cpp:57:57: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%d\n", query(freq[magics[1]], freq[magics[2]], freq[magics[4]])); ^ user.cpp:57:74: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%d\n", query(freq[magics[1]], freq[magics[2]], freq[magics[4]])); ^ user.cpp:46:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf(" %c", &magics[1 << i]); ^ user.cpp:50:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &T); ^ user.cpp:53:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &P); ^ user.cpp:54:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", buf); ^