Compilare: main.cpp: In function 'int main()': main.cpp:30:19: warning: array subscript has type 'char' [-Wchar-subscripts] 30 | c[++vf]=s[i]; | ^~~~ main.cpp:36:23: warning: array subscript has type 'char' [-Wchar-subscripts] 36 | stiva[++vf]=c[i]; | ^~~~ main.cpp:38:47: warning: array subscript has type 'char' [-Wchar-subscripts] 38 | if(c[i]==')' && vf>0 && stiva[vf]=='(') | ^~ main.cpp:41:51: warning: array subscript has type 'char' [-Wchar-subscripts] 41 | if(c[i]==']' && vf>0 && stiva[vf]=='[') | ^~ main.cpp:16:15: warning: unused variable 'j' [-Wunused-variable] 16 | int t,i,n,j,ok=0; | ^