Compilare: main.cpp: In function 'int main()': main.cpp:78:34: warning: array subscript has type 'char' [-Wchar-subscripts] 78 | sumfreq1[i] = ++freq1[v[i]]; | ~~~^ main.cpp:79:41: warning: array subscript has type 'char' [-Wchar-subscripts] 79 | sumfreq2[i] = ++freq2[switchCase(v[i])]; | ~~~~~~~~~~^~~~~~ main.cpp:96:36: warning: array subscript has type 'char' [-Wchar-subscripts] 96 | out << res << ' ' << freq1[res] * freqNorm + freq2[res] * freqAlt + ((v[n] == res) ? sumfreq1[n] : sumfreq2[n]) << '\n'; | ^~~ main.cpp:96:60: warning: array subscript has type 'char' [-Wchar-subscripts] 96 | out << res << ' ' << freq1[res] * freqNorm + freq2[res] * freqAlt + ((v[n] == res) ? sumfreq1[n] : sumfreq2[n]) << '\n'; | ^~~