Compilare: user.cpp: In function ‘int expresie()’: user.cpp:11:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]=='+'||s[i]=='-') ^ user.cpp:11:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]=='+'||s[i]=='-') ^ user.cpp:12:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(s[i]=='+')++i,r+=termen(); ^ user.cpp: In function ‘int termen()’: user.cpp:18:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]=='*'||s[i]=='/') ^ user.cpp:18:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]=='*'||s[i]=='/') ^ user.cpp:19:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(s[i]=='*')++i,r*=factor(); ^ user.cpp: In function ‘int factor()’: user.cpp:25:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(s[i]=='('){ ^ user.cpp:31:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]>='0'&&s[i]<='9')r=r*10+(s[i]-'0'),++i; ^ user.cpp:31:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]>='0'&&s[i]<='9')r=r*10+(s[i]-'0'),++i; ^ user.cpp:31:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[i]>='0'&&s[i]<='9')r=r*10+(s[i]-'0'),++i; ^