c++ - 错误 : '' has not been declared

Question

我正在尝试实现链表，但在编译时出现错误:

intSLLst.cpp:38: error: ‘intSLList’ has not been declared

intSLList 看起来好像已经向我声明了，所以我真的很困惑。

intSLLst.cpp

#include <iostream>
#include "intSLLst.h"


int intSLList::deleteFromHead(){
}

int main(){

}

intSLLst.h

#ifndef INT_LINKED_LIST
#define INT_LINKED_LIST
#include <cstddef>

class IntSLLNode{
  int info;
  IntSLLNode *next;

  IntSLLNode(int el, IntSLLNode *ptr = NULL){
    info = el; next = ptr;
  }

};

class IntSLList{
 public:
  IntSLList(){
    head = tail = NULL;
  }

  ~IntSLList();

  int isEmpty();
  bool isInList(int) const;

  void addToHead(int);
  void addToTail(int);

  int deleteFromHead();
  int deleteFromTail();
  void deleteNode(int);

 private:
  IntSLLNode *head, *tail;

};

#endif

Answer 1

你使用的是小写的 i

int intSLList::deleteFromHead(){
}

应该是

int IntSLList::deleteFromHead(){
}

C++ 中的名称始终区分大小写。