Compilare: user.cpp: In function ‘std::pair<int, int> GET(int)’: user.cpp:16:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (ap[sir[j]]) sir[j] = ap[sir[j]]; ^ user.cpp:16:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (ap[sir[j]]) sir[j] = ap[sir[j]]; ^ user.cpp:17:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] else sir[j] = ap[sir[j]] = j; ^ user.cpp:26:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[j] = 0; ^ user.cpp: In function ‘int main()’: user.cpp:32:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("criptare2.in", "r", stdin); ^ user.cpp:33:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("criptare2.out", "w", stdout); ^ user.cpp:34:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d\n", &n); ^ user.cpp:41:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%s", sir + 1); ^ user.cpp:45:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d\n", &m); ^ user.cpp:48:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%s", sir + 1); ^