面试宝典继承和接口给的答案出了问题，自己不太会改
#include<iostream>
#include<string>
using namespace std;

class bird
{
public:
void eat();
void sleep();
void fly();
};

class ostrich
{
public:
bird eat(){cout<<"ostrich eat";};
bird sleep(){cout<<"ostrich sleep";};

};

int main()
{
ostrich xiaoq;
xiaoq.eat();
xiaoq.sleep();
return 0;
}
麻烦帮着看下，灰常简单，谢谢
[解决办法]
如果只想通过编译可以把返回类型改为 void

 
 class ostrich
 {
 public:
 void eat()
 {
 cout<<"ostrich eat";
 }
 void sleep()
 {
 cout<<"ostrich sleep";
 }
  
  };