balanced parantheses

[Chubby]

I dont no how to fix. Can someone help me out plz. (Please see the picture)
[IMG]http://i61.tinypic.com/2r2cfnq.png[/IMG]

    #ifndef DYNINTSTACK_H
    #define DYNINTSTACK_H
    class DynIntStack
    {
    private:
    // Structure for stack nodes
    struct StackNode
    {
    int value; // Value in the node
    StackNode *next; // Pointer to the next node
    };
    StackNode *top; // Pointer to the stack top
    public:
    // Constructor
    DynIntStack()
    { top = NULL; }
    // Destructor
    ~DynIntStack();
    // Stack operations
    void push(int);
    void pop(int &);
    bool bracketsame(char,char);
    bool balancedparantheses(string); //checks if parentheses are
    bool isEmpty();
    };
    #endif
    #include "DynIntStack.h"
    #include <iostream>
    #include <string>
    using namespace std;
    // Main to run program
    int main()
    {
    string expression;
    cout<<"Enter an expression to check: ";
    cin>>expression;
    if(DynIntStack::balancedparantheses(expression))
    cout<<"Balanced expression \n";
    else
    cout<<"Expression is not balanced \n";
    }
    bool bracketsame(char opening,char closing) // function checks if opening and closing brackets are same
    {
    if(opening == '(' && closing == ')') return true;
    else if(opening == '{' && closing == '}') return true;
    else if(opening == '[' && closing == ']') return true;
    return false;
    }
    bool balancedparantheses(string exp) //checks if parentheses are
    { //balanced or not
    stack<char> StackNode;
    for(int i =0;i<exp.length();i++)
    {
    if(exp[i] == '(' || exp[i] == '{' || exp[i] == '[')
    StackNode.push(exp[i]);
    else if(exp[i] == ')' || exp[i] == '}' || exp[i] == ']')
    {
    if(StackNode.empty() || !bracketsame(StackNode.top(),exp[i]))
    return false;
    else
    StackNode.pop();
    }
    }
    return StackNode.empty() ? true:false;
    }

[codewalker]

#include <stack>

But that wont solve all your problems
You have declared

    bool bracketsame(char,char);
    bool balancedparantheses(string); //checks if parentheses are 

as part of a DynIntStack and defined them as standalone? Need to add DynIntStack:: to them then declare a variable of DynIntStack then call the function as DynIntStack.whatever