Compilare: main.cpp: In function 'int main()': main.cpp:24:26: warning: array subscript has type 'char' [-Wchar-subscripts] 24 | f[s[i]]++; | ~~~^ main.cpp:27:27: warning: array subscript has type 'char' [-Wchar-subscripts] 27 | f1[t[i]]++; | ~~~^ main.cpp:30:30: warning: array subscript has type 'char' [-Wchar-subscripts] 30 | if(f1[s[i]]==2*f[s[i]]) | ~~~^ main.cpp:30:41: warning: array subscript has type 'char' [-Wchar-subscripts] 30 | if(f1[s[i]]==2*f[s[i]]) | ~~~^ main.cpp:33:30: warning: array subscript has type 'char' [-Wchar-subscripts] 33 | f[s[i]]=0; | ~~~^