Compilare: user.cpp: In function ‘int factor()’: user.cpp:18:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( s[i] == '(' ){ ^ user.cpp:24:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( s[i] >= '0' && s[i] <= '9' ){ ^ user.cpp:24:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( s[i] >= '0' && s[i] <= '9' ){ ^ user.cpp:25:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] r = r * 10 + ( s[i] - '0' ); ^ user.cpp: In function ‘int termen()’: user.cpp:37:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( s[i] == '*' || s[i] == '/' ) ^ user.cpp:37:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( s[i] == '*' || s[i] == '/' ) ^ user.cpp:38:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( s[i] == '*' ){ ^ user.cpp: In function ‘int expresie()’: user.cpp:53:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( s[i] == '+' || s[i] == '-' ) ^ user.cpp:53:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] while( s[i] == '+' || s[i] == '-' ) ^ user.cpp:54:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( s[i] == '+' ){ ^