一切正常，但無法運行：預期錯誤{或;

Question

我找不到我的錯誤在哪裏可以幫我嗎？預計錯誤;或}但我已經把它放在那裏我無法運行它雖然。你知道爲什麼嗎？驅動的課程關閉;儘管該程序仍然無法編譯。請指導我，謝謝

#include <iostream> 
    using namespace std; 
    class myBase{ 
      private: 
        int foodmoney; 
        int hobbymoney; 

        public: 
       void setdata(); 
      friend int caldata(); 
       }; 
       void myBase::setdata(){ 
         cout<<"Enter foodmoney :" ;cin>>foodmoney; 
         cout<<"enter hoobymoney:";cin>>hobbymoney; 
         } 
       int caldata(int sum,int foodmoney,int hobbymoney){ 
         cin>>foodmoney; 
         cin>>hobbymoney;   
         sum=(foodmoney+hobbymoney)/2; 
         return sum; 

          } 


     class Derivedclass:public myBase{ 
         int moneyforfood,moneyforhobby; 
         public: 
       int setmydrived(int moneyforfood,int moneyforhobby){ 
         cout<<"enter money for food(drived class)"<<endl; 
         cin>>moneyforfood; 
         cout<<"enter money for hobby(drived class)"<<endl; 
         cin>>moneyforhobby; 
         } 

         int calculatedrived(){ 

        int sumd=(moneyforfood+moneyforhobby); 
        cout<<"avg money on frived class "<<sumd<<endl; 
        }; 


        int main(){ 
        myBase baseobj; 
        baseobj.setdata(); 
        int caldata(); 
      Derivedclass obj; 
        int setmydrived(); 
        obj.calculatedrived(); 
         system("puase"); 

     } 

Answer 1

你錯過了最後一班定義的右括號（和分號）。

如果您使用一種理智的縮進風格，那麼這種事情更容易發現。

您還在返回某些東西的函數中缺少兩個返回語句。這是未定義的行爲。

Answer 2

您應該在課堂申報後添加;。例如：

class Whatever { 

}; 

Answer 3

有在你的代碼幾個誤區：

• 你是缺少一個右括號（}）爲class Derivedclass:public myBase

• 暫停的拼寫是系統不正確（」暫停「）

• int setmydrived和int calculatedrived函數應該是r去掉一個整數，但是你沒有返回一個整數。

我糾正了錯誤。下面的代碼將正常工作（見IDEONE示範）：

#include <iostream> 
using namespace std; 
class myBase 
{ 
private: 
    int foodmoney; 
    int hobbymoney; 

public: 
    void setdata(); 
    friend int caldata(); 
}; 
void myBase::setdata() 
{ 
    cout<<"Enter foodmoney :" ;cin>>foodmoney; 
    cout<<"enter hoobymoney:";cin>>hobbymoney; 
} 
int caldata(int sum,int foodmoney,int hobbymoney) 
{ 
    cin>>foodmoney; 
    cin>>hobbymoney;   
    sum=(foodmoney+hobbymoney)/2; 
    return sum; 

} 


class Derivedclass:public myBase 
{ 
    int moneyforfood,moneyforhobby; 
public: 
    int setmydrived(int moneyforfood,int moneyforhobby) 
    { 
     cout<<"enter money for food(drived class)"<<endl; 
     cin>>moneyforfood; 
     cout<<"enter money for hobby(drived class)"<<endl; 
     cin>>moneyforhobby; 
        /*THIS FUNCTION DOESNOT RETURN ANY INT VAL*/ 
    } 

    int calculatedrived() 
    { 

     int sumd=(moneyforfood+moneyforhobby); 
     cout<<"avg money on frived class "<<sumd<<endl; 
     //return sumd; 
        /*THIS FUNCTION DOESNOT RETURN ANY INT VAL*/ 

    } 
}; 

int main() 
{ 
    myBase baseobj; 
    baseobj.setdata(); 
    int caldata(); 
    Derivedclass obj; 
    int setmydrived(); 
    obj.calculatedrived(); 
    system("pause"); 

}