Compilare: main.cpp: In function 'int main()': main.cpp:24:24: warning: array subscript has type 'char' [-Wchar-subscripts] 24 | nxt = ( 1 * pc[ch] + 2 * pi[ch] + ( 1 + last ) * pb[ch] ) / pc[ch]; | ^~ main.cpp:24:37: warning: array subscript has type 'char' [-Wchar-subscripts] 24 | nxt = ( 1 * pc[ch] + 2 * pi[ch] + ( 1 + last ) * pb[ch] ) / pc[ch]; | ^~ main.cpp:24:61: warning: array subscript has type 'char' [-Wchar-subscripts] 24 | nxt = ( 1 * pc[ch] + 2 * pi[ch] + ( 1 + last ) * pb[ch] ) / pc[ch]; | ^~ main.cpp:24:72: warning: array subscript has type 'char' [-Wchar-subscripts] 24 | nxt = ( 1 * pc[ch] + 2 * pi[ch] + ( 1 + last ) * pb[ch] ) / pc[ch]; | ^~