Compilare: user.cpp: In function ‘int aduna()’: user.cpp:14:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]=='+'||s[i]=='-') ^ user.cpp:14:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]=='+'||s[i]=='-') ^ user.cpp:16:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(s[i]=='+') ^ user.cpp: In function ‘int produs()’: user.cpp:26:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]=='*'||s[i]=='/') ^ user.cpp:26:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]=='*'||s[i]=='/') ^ user.cpp:28:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(s[i]=='*') ^ user.cpp:31:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(s[i]=='/') ^ user.cpp: In function ‘int exp()’: user.cpp:39:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(s[i]=='(') ^ user.cpp:47:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]>='0' && s[i]<='9') ^ user.cpp:47:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]>='0' && s[i]<='9') ^ user.cpp:49:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] rez=rez*10+(s[i]-'0'); ^