Compilare: user.cpp: In function ‘int factor(char*, int&, int*)’: user.cpp:63:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] r = vl[s[pp]], ^ user.cpp: In function ‘int fu(char, int&)’: user.cpp:81:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] param[++par] = val[v[in]]; ^ user.cpp:104:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] vl[f[k][i]] = param[++vlp]; ^ user.cpp: In function ‘int fun(int*, char)’: user.cpp:121:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] vl[f[k][i]] = param[++vlp]; ^ user.cpp: In function ‘int main()’: user.cpp:135:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] val[a[0]] = a[2]-'0'; ^ user.cpp:137:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] val[a[0]] = val[a[0]] * 10 + a[3]-'0'; ^ user.cpp:137:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] val[a[0]] = val[a[0]] * 10 + a[3]-'0'; ^ user.cpp:139:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] val[a[0]] = val[a[0]] * 10 + a[4]-'0'; ^ user.cpp:139:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] val[a[0]] = val[a[0]] * 10 + a[4]-'0'; ^ user.cpp:157:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] param[++par] = val[v[i]]; ^