Compilare: user.cpp: In function ‘int paranteze()’: user.cpp:13:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(sir[i]=='(') ^ user.cpp:20:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(;sir[i]>='0' && sir[i]<='9';i++) ^ user.cpp:20:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(;sir[i]>='0' && sir[i]<='9';i++) ^ user.cpp:21:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] r=r*10+sir[i]-'0'; ^ user.cpp: In function ‘int calcul1()’: user.cpp:27:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(sir[i]=='+' || sir[i]=='-') ^ user.cpp:27:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(sir[i]=='+' || sir[i]=='-') ^ user.cpp:29:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (sir[i]=='+') ^ user.cpp:34:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(sir[i]=='-') ^ user.cpp: In function ‘int calcul2()’: user.cpp:45:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(sir[i]=='*' || sir[i]=='/') ^ user.cpp:45:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(sir[i]=='*' || sir[i]=='/') ^ user.cpp:47:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (sir[i]=='*') ^ user.cpp:52:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(sir[i]=='/') ^