I have this class (hashMap.h):
#pragma once
#include <iostream>
#include <vector>
#include <string>
#include "functions.h"
using std::cout;
using std::vector;
using std::endl;
using std::string;
class hashMap
{
public:
explicit hashMap(int hashEntrySize = 101) : hashVector(nextPrime(2 * hashEntrySize)), currentSize{ 0 }
{}
bool containsKey(const string & searchKey);
bool containsVector(const vector<string> searchVector);
void insert(const string & keyTarget, const vector<string> & insertVector);
void insertAfterReHash(const string & keyTarget, const vector<string> & insertVector);
int getCurrentSize() const;
void assignKey(string & newKey);
private:
enum EntryType { ACTIVE, EMPTY, DELETED };
struct hashEntry
{
vector<string> vectorValue;
EntryType status;
int keyID;
string key;
hashEntry(EntryType s = EMPTY)
:status(s), keyID{ -1 } {}
};
size_t hashFunction(const string & key);
bool isActive(int currentPos) const;
int findPos(const string & keyTarget);
void reHash();
vector<hashEntry> hashVector;
int currentSize;
};
And a function header file (functions.h):
#pragma once
#include <iostream>>
#include <vector>
#include <string>
#include <fstream>
using std::string;
using std::cout;
using std::vector;
using std::endl;
using std::cin;
using std::ifstream;
using std::getline;
hashMap computeAdjacentWords(const vector<string> & words) //error at this line
{
hashMap hm(500);
//do stuff with object
return hm;
}
And the main file:
#include <iostream>>
#include <vector>
#include <string>
#include <fstream>
#include "hashMap.h"
using std::string;
using std::cout;
using std::vector;
using std::endl;
using std::cin;
using std::ifstream;
using std::getline;
int main()
{
vector<string> words;
string line;
ifstream dictionaryFile;
dictionaryFile.open("largedictionary.txt");
words = readinWords(dictionaryFile);
dictionaryFile.close();
hashMap hm = computeAdjacentWords(words);
return 0;
}
I created the hashMap class and I want to be able to return a hashMap object, but this is giving me an error of "Error C4430 missing type specifier - int assumed." What am I doing wrong?
I put the code in files and nicely asked the compiler to do its job. This is the first warning from the list:
$ cc main.cpp -c
In file included from main.cpp:5:
In file included from ./hashMap.h:6:
./functions.h:16:1: error: unknown type name 'hashMap'
hashMap computeAdjacentWords(const vector<string> & words) //error at this line
^
The compiler doesn't know what hashMap is. When it reaches the line with the error, the hashMap symbol was not yet declared or defined.
You shouldn't define functions in header files.
Rename functions.h to functions.cpp, add #include "functions.h" at the end of the list of includes.
Create a new file functions.h that contains only the declarations of the functions (the function header) and the types they use:
#ifndef __FUNCTIONS_H__
#define __FUNCTIONS_H__
#pragma once
//#include <iostream>
#include <vector>
#include <string>
//#include <fstream>
#include "hashMap.h"
using std::string;
using std::vector;
// Do you really need all these types here?
using std::cout;
using std::endl;
using std::cin;
using std::ifstream;
using std::getline;
hashMap computeAdjacentWords(const vector<string> & words);
#endif // __FUNCTIONS_H__
Collected from the Internet
Please contact [email protected] to delete if infringement.
Comments