C++ stack implementation (homework)
SOLVED: I cannot for the life of me figure out why I get an error when trying to initialize the stack here:
#include "stack.h"
#include "linkList.h"
Stack::Stack() : m_top(0), m_size(0)
{
m_stack = new List(); // cannot assign m_stack this way. How do i initialize here?
}
The syntax error according to Intellisense is as follows:
Error: a value of type List* cannot be assigned to an entity of type List*
The stack class is here:
#ifndef stack_H
#define stack_H
#include "linkList.h"
class Stack
{
public:
//
// Constructor to initialize stack data
//
Stack();
//
// functionality to determine if stack is empty
//
bool isEmpty();
//
// methods for pushing data on to stack and for
// popping data from the stack
//
void push(Node* current, int newValue);
void pop(开发者_如何转开发);
private:
//
// member data which represent the stack, the top
// of the stack and the size of the stack
//
Node* m_top;
List* m_stack;
unsigned m_size;
};
#endif
I know that the linkList class works because I tested it out before. If I wanted to create a new list, all I have to do is:
List* myList = new List();
SOLVED: Now I am getting some infuriating linker errors, and I cant figure out why:
1>------ Build started: Project: Stack, Configuration: Debug Win32 ------
1>Build started 10/10/2011 4:50:24 PM.
1>InitializeBuildStatus:
1> Touching "Debug\Stack.unsuccessfulbuild".
1>ClCompile:
1> myStack.cpp
1> linkList.cpp
1> Generating Code...
1>MSVCRTD.lib(crtexe.obj) : error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup
1>C:\Users\Dylan\documents\visual studio 2010\Projects\Stack\Debug\Stack.exe : fatal error LNK1120: 1 unresolved externals
1>
1>Build FAILED.
To make sure my stack header file was not in conflict with STL's or whatever, I renamed it myStack.h (yes, begin laughing):
#ifndef myStack_H
#define myStack_H
This error :
1>MSVCRTD.lib(crtexe.obj) : error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup
Usually happens when your project is wrongly setup. I guess that you are writing a console app but you have selected as type of project something else than a console app.
This linker error
1>MSVCRTD.lib(crtexe.obj) : error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup
1>C:\Users\Dylan\documents\visual studio 2010\Projects\Stack\Debug\Stack.exe : fatal error LNK1120: 1 unresolved externals
means that the linker can't find a main() function. You're trying to make an executable, so you have to have a main().
Also, it appears you've edited your original question to now be something else. That's extremely confusing because the question and answers/comments no longer match. Start a new question if you run into another issue.
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