我在Prolog上找出一個輸入國家的首都的BU,我在第10和11行上一直得到這個錯誤:Prolog中的這個錯誤是什麼意思?
錯誤:c:/ users/cesar downs/documents /capital.pl:10:Syntax error:Operator expected 錯誤:c:/ users/cesar下降/ documents/capital.pl:11:語法錯誤:操作員預計
我真的不明白,繼承人代碼:
capital_of(guatemala, guatemala).
capital_of(tegucigalpa, honduras).
capital_of(san_salvador, el_salvador).
capital_of(managua, nicaragua).
capital_of(san_jose, costa_rica).
capital_of(panamá, panamá).
%Rules
Capital:- write(‘Enter the country: ‘),Read(Country),Answer(Country).
Answer(Country):- capital_of(Country,City),Write(‘The capital of: ‘),Write(Country),Write(‘ is ‘),Write(City).