Compilare: user.cpp: In function ‘int produs(int)’: user.cpp:12:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[i]!=')' && i<n && v[i]!='+' && v[i]!='-') ^ user.cpp:12:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[i]!=')' && i<n && v[i]!='+' && v[i]!='-') ^ user.cpp:12:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[i]!=')' && i<n && v[i]!='+' && v[i]!='-') ^ user.cpp:14:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[i]=='*') ^ user.cpp:17:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[i]<='9' && v[i]>='0') ^ user.cpp:17:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[i]<='9' && v[i]>='0') ^ user.cpp:20:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[i]<='9' && v[i]>='0') ^ user.cpp:20:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[i]<='9' && v[i]>='0') ^ user.cpp:22:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] nr=nr*10+v[i]-'0'; ^ user.cpp:27:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(v[i]=='(') ^ user.cpp:35:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[i]<='9' && v[i]>='0') ^ user.cpp:35:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[i]<='9' && v[i]>='0') ^ user.cpp:38:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[i]<='9' && v[i]>='0') ^ user.cpp:38:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[i]<='9' && v[i]>='0') ^ user.cpp:40:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] nr=nr*10+v[i]-'0'; ^ user.cpp:45:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(v[i]=='(') ^ user.cpp: In function ‘int eval()’: