Compilare: main.cpp: In function 'int main()': main.cpp:17:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] in>>sir1+1>>sir2+1; ~~~~^~ main.cpp:17:28: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] in>>sir1+1>>sir2+1; ~~~~^~ main.cpp:20:29: warning: array subscript has type 'char' [-Wchar-subscripts] ++vc[sir1[i]]; ^ main.cpp:27:29: warning: array subscript has type 'char' [-Wchar-subscripts] ++vc[sir2[i]]; ^