Compilare: user.cpp: In function ‘int main()’: user.cpp:31:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<s.size(); ++i) ^ user.cpp:37:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v-a[c[i]]>=0) v-=a[c[i]], cout<<c[i], u=0, ++i; ^ user.cpp:37:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v-a[c[i]]>=0) v-=a[c[i]], cout<<c[i], u=0, ++i; ^ user.cpp:38:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] else v-=a[c[i]], ++i; ^ user.cpp:41:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v<=0 && i==m-1 && a[c[i]]<=-v+3) cout<<c[i], u=0; else ^ user.cpp:42:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v<=0 && i+1==m-1 && a[c[i]]+a[c[i+1]]<=-v+3) cout<<c[i]<<c[i+1], u=0; else ^ user.cpp:42:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v<=0 && i+1==m-1 && a[c[i]]+a[c[i+1]]<=-v+3) cout<<c[i]<<c[i+1], u=0; else ^ user.cpp:43:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v<=0 && i+2==m-1 && a[c[i]]+a[c[i+1]]+a[c[i+2]]<=-v+3) cout<<c[i]<<c[i+1]<<c[i+2], u=0; ^ user.cpp:43:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v<=0 && i+2==m-1 && a[c[i]]+a[c[i+1]]+a[c[i+2]]<=-v+3) cout<<c[i]<<c[i+1]<<c[i+2], u=0; ^ user.cpp:43:52: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v<=0 && i+2==m-1 && a[c[i]]+a[c[i+1]]+a[c[i+2]]<=-v+3) cout<<c[i]<<c[i+1]<<c[i+2], u=0; ^