Compilare: user.cpp: In function ‘void put_hash(int)’: user.cpp:31:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] a = a * 307 + hs1[pat[i]]; ^ user.cpp:32:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] b = b * 317 + hs2[pat[i]]; ^ user.cpp: In function ‘void count_hash()’: user.cpp:59:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] a = a * 307 + hs1[str[i]]; ^ user.cpp:60:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] b = b * 317 + hs2[str[i]]; ^ user.cpp:65:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] a = a * 307 - pwa * hs1[str[i-l]] + hs1[str[i]]; ^ user.cpp:65:59: warning: array subscript has type ‘char’ [-Wchar-subscripts] a = a * 307 - pwa * hs1[str[i-l]] + hs1[str[i]]; ^ user.cpp:66:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] b = b * 317 - pwb * hs2[str[i-l]] + hs2[str[i]]; ^ user.cpp:66:59: warning: array subscript has type ‘char’ [-Wchar-subscripts] b = b * 317 - pwb * hs2[str[i-l]] + hs2[str[i]]; ^ user.cpp: In function ‘int main()’: user.cpp:73:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("seti.in", "r", stdin); ^ user.cpp:74:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("seti.out", "w", stdout); ^ user.cpp:84:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &n); ^ user.cpp:86:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(str+s, 1, 64, stdin); ^ user.cpp:87:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf(" "); ^ user.cpp:92:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &m); ^ user.cpp:94:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s ", pat); ^