帮助理解我的错误。 [英] Help understanding my erros.

问题描述

我是C ++的新手，我正在尝试创建一个模拟兔子群的程序。到目前为止，我刚刚开始，并希望让我的程序接受用户输入启动程序，并根据用户输入创建一个链接列表来启动程序。



我收到以下错误。

I am new to C++ and I am trying to create a program that will simulate a colony of bunnies. So far I am just starting out and want to make my program take in user input to start the program and based on the user input to create a linked list to start the program.

I get the following errors.

main.cpp:12:10: error: ‘s’ was not declared in this scope
   cin >> s;
          ^
main.cpp:16:2: error: ‘BunnyList’ was not declared in this scope
  BunnyList * colony = new BunnyList;
  ^
main.cpp:16:14: error: ‘colony’ was not declared in this scope
  BunnyList * colony = new BunnyList;
              ^
main.cpp:16:27: error: ‘BunnyList’ does not name a type
  BunnyList * colony = new BunnyList;
                           ^

我尝试了什么：

What I have tried:

#include <iostream>
#include <string>
#include <ctime>
#include <string>

//#include "ListofBunny.h"

int main (){
	 
	 string s;
	 cout << "Please press 's' to start the pass";
	 cin >> s;
	 
	 while(s == 's' | s == 'S'){
		 //creates a linked list of bunnies 
	BunnyList * colony = new BunnyList;
	 }
	
}

推荐答案

正如其他人已经注意到的那样，你要么使用使用（原谅双关语）声明，例如

As others already noted, you shuold either use the using (pardon the pun) declaration, e.g.

#include <iostream>
#include <string>
#include <ctime>
using namespace std;
//..

或先于 std :: 说明符属于标准命名空间的对象，例如

or precede with the std:: specifier the object belonging to the 'standard' namespace, e.g.

int main()
{
  std::string s;
  //..

此外，如果你的程序使用 BunnyList类（或 struct ）然后你需要包含声明这样的类（或 struct ）的头文件。

Moreover if your program uses the BunnyList class (or struct) then you need to include the header file declaring such a class (or struct).

对于名为BunnyList的类的使用，您必须声明或实现它。通常标题应该具有名称BunnyList.h并且具有以下内容：

For the use of a class named BunnyList you must declare or implement it. Normally the header should have the name "BunnyList.h" and have such content:

class BunnyList {
//todo
};

你的s应该是一个字母

Your s should be a char

char s = 0;//initial value
BunnyList * colony = new BunnyList();// good style with braces (if class) WITHOUT if struct

祝你好运。观看Youtube上的一些教程; - ）

Good luck. Watch some tutorial on Youtube ;-)

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