Compilare: main.cpp: In function 'int main()': main.cpp:30:18: warning: array subscript has type 'char' [-Wchar-subscripts] fv[s[i-1]]++,mat[nr(s[i-1])][i]++; ^ main.cpp:29:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1;i<=k;i++) ^~~ main.cpp:31:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(i=1;i<=52;i++) ^~~ main.cpp:62:21: warning: array subscript has type 'char' [-Wchar-subscripts] cnt=n/(2*k)*(fv[ch]+fv[caps(ch)]); ^ main.cpp:62:34: warning: array subscript has type 'char' [-Wchar-subscripts] cnt=n/(2*k)*(fv[ch]+fv[caps(ch)]); ^ main.cpp:66:18: warning: array subscript has type 'char' [-Wchar-subscripts] cnt=cnt+fv[ch]+mat[nr(caps(ch))][n%(2*k)-k]; ^ main.cpp:68:24: warning: array subscript has type 'char' [-Wchar-subscripts] cnt=cnt+fv[caps(ch)]+mat[nr(ch)][n%(2*k)-k]; ^