Compilare: main.cpp: In function 'int cautst(char, int)': main.cpp:96:17: warning: array subscript has type 'char' [-Wchar-subscripts] dr = v[color]; ^ main.cpp:101:19: warning: array subscript has type 'char' [-Wchar-subscripts] if(a[color][mid] >= elem) { ^ main.cpp: In function 'int cautdr(char, int)': main.cpp:113:17: warning: array subscript has type 'char' [-Wchar-subscripts] dr = v[color]; ^ main.cpp:117:19: warning: array subscript has type 'char' [-Wchar-subscripts] if(a[color][mid] <= elem) { ^ main.cpp: In member function 'char InParser::read_ch()': main.cpp:37:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^