Compilare: main.cpp: In function 'bool highpriority()': main.cpp:55:37: warning: array subscript has type 'char' [-Wchar-subscripts] 55 | r = val[ s[i] ]; | ~~~^ main.cpp: In function 'int main()': main.cpp:72:17: warning: array subscript has type 'char' [-Wchar-subscripts] 72 | val[ a[j] ] = !val[ a[j] ]; | ~~~^ main.cpp:72:32: warning: array subscript has type 'char' [-Wchar-subscripts] 72 | val[ a[j] ] = !val[ a[j] ]; | ~~~^ main.cpp: In function 'bool highpriority()': main.cpp:62:12: warning: 'r' may be used uninitialized in this function [-Wmaybe-uninitialized] 62 | return r; | ^