Im stuck and can't figure this out

For this code Im using a class for a stack. I want to read a string then push any open brackets on to the stack and pop the closing brackets off. If there are no brackets then I want it to ignore the string. Then I want it to display if they have been used properly. I test them with these:
a+b
(a-b)
((c-d)
{e-f/[g+h]}
(s+t]

Code:

#include <iostream>
using namespace std;

const int DefaultListSize = 50;
typedef char Elem;

class Astack 
{
private:
	int top;	/*Index for top element*/
	int size;	/*Maximum size of stack*/
	Elem*listArray;	/*Array holding stack elements*/
public:	
		Astack(int sz =DefaultListSize)	/*Constructor*/
		{size = sz; top = 0; listArray = new Elem[sz];}
		~Astack() { delete [] listArray;}	/*Destructor*/
		void clear() {top = 0;}
		bool push(const Elem& item){
			if(top == size) return false;	/* Stack is full*/
			else {listArray [top++] = item;
				return true;
			}
		}
		bool pop(Elem& item){	/*Pop top element*/
			if(top == 0) return false;
			else {item = listArray[--top]; 
				return true;
			}
		}
		bool topValue(Elem& item) const {	/*Return top element*/
			if (top == 0) return false;
			else {item = listArray[top - 1];
			return true;
			}
		}
		int length() const {return top;}
		bool IsEmpty() const {if(top == 0) return true;
		else return false;
		}
	};

	bool Opener(char ch){
	 if((ch == '(') || (ch =='[') || (ch =='{'))
		return true;
	else 
		return false;
	}/*end of opener*/

	bool Match(char Lc, char Rc){
		if(( Lc == '(') && (Rc == ')') || ((Lc == '[') && (Rc == ']')) ||((Lc == '{') && (Rc == ']')))
			return true;
		else
			return false;
	}/*end of Match*/

	bool Closer(char ch){
		if((ch == ')') || (ch == ']') || (ch == '}'))
			return true;
		else
			return false;
	}/*end of closer*/

int main(){
	
	Astack S;
	char s;

cout <<"Enter data:";
cin >> s;

if(Opener (s)){ 
		S.push (s);
}

if(Closer (s)){
		S.pop (s);
}

while(cin >> s){
	if(Match){
		cout << "Grouping symbols used properly";
	}
	else
		cout << "Unmatched grouping symbols";
}
}

It works it just doesn't work correctly. I know it's my main program that is wrong I just cant figure out what.

> if(Match)
This doesn't call Match.

It is just a bare function pointer, which always compares as not equal to NULL (therefore, always true).

Nor are you popping things off your stack to compare with.

I dont see how Im not calling it. I thought it would be similiar to how I did Opener and Closer. Don't I want to say read my string, if my string is does a match then display grouping symbols used properly else they are not?

You are not passing any arguments to Match.

ok, so I guess the question I need to ask then is what do I need to argue?

Originally Posted by jturner38

ok, so I guess the question I need to ask then is what do I need to argue?

You have declared the functions signature as such:

Code:

bool Match(char Lc, char Rc)

So you need to pass in Lc and Rc when you call the function.