Compilare: user.cpp: In function ‘void read(int&)’: user.cpp:24:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] h += pr * poz[buff[pz]]; ^ user.cpp: In function ‘int main()’: user.cpp:37:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (int i = 0; i < 12; i++) poz[S[i]] = i; ^ user.cpp: In function ‘void read(int&)’: user.cpp:22:53: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++pz == dim) fread(buff, 1, dim, stdin), pz = 0; ^ user.cpp:25:53: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++pz == dim) fread(buff, 1, dim, stdin), pz = 0; ^