Compilare: main.cpp: In function 'int eval()': main.cpp:58:24: warning: array subscript has type 'char' [-Wchar-subscripts] 58 | else return v[c[i++]]; | ~~~~~^ main.cpp: In function 'int main()': main.cpp:102:11: warning: array subscript has type 'char' [-Wchar-subscripts] 102 | v[p] = 1 - v[p]; | ^ main.cpp:102:22: warning: array subscript has type 'char' [-Wchar-subscripts] 102 | v[p] = 1 - v[p]; | ^