How to fix "error LNK2019" in implementation of heap?

[Despo]

I have this program which is an implementation of a heap and the error LNK2019 occurs

#include <iostream>

using namespace std;


class Heap {
public:
	int treeData[1000]; // a heap of up to 999 elements. position 0 is kept for size
	void heap();
	void add(int);
};

void Heap::heap() {
	treeData[0] = 0; //set the size to 0
}

void Heap::add(int v) {
	treeData[0]++; //increase the size
	int pos = treeData[0];
	treeData[pos] = v; //put the value in the next position in the complete tree
	while(pos >1) { //as long as the root is not reached
		if(treeData[pos] > treeData[pos/2]) {//if value of node is bigger than the parent
			int tmp = treeData[pos];
			treeData[pos] = treeData[pos/2];
			treeData[pos/2] = tmp; //swap the value of the child with the parent
			pos = pos/2; //update the position to the parent
		}
		else return; //else stop
	}
}

void Heap::remove(){
    int size= treeData[0]; 
    treeData[1]=treeData[size];
    treeData[size]= 0; 
    treeData[0] --;
    
    for (int i=1; i<(treeData[0]/2)+1;i++){ 
        if (treeData[i]<treeData[i*2]){ 
			int tmp =treeData[i];    
			treeData[i]=treeData[i*2];
			treeData[i*2]=tmp;
		}
    
        if(treeData[i]<treeData[(i*2)+1]){
			int tmp=treeData[i];
			treeData[i]=treeData[(i*2)+1];
			treeData[(i*2)+1]=tmp;
	    }
	}
}

void Heap::showroot() { 
    int root;
    root=treeData[1];
    cout << root <<endl;
}



void main() {
	Heap myheap;
	myheap.add(35);
	myheap.add(68);
	myheap.add(76);
	myheap.add(22);
	myheap.add(9);
	myheap.add(83);
	myheap.add(12);
	myheap.add(2);
	myheap.add(43);
	cout << myheap.treeData[0];


     for (int i=myheap.treeData[0]; i !=0, --i;) { 
                    cout << num++ <<":  ";
                    myheap.showroot();
                    myheap.remove();
     }


}

//What should i do???????

[tdlr]

You need to declare the Heap::remove and Heap::showRoot methods inside the class' declaration:

class Heap {
public:
int treeData[1000]; // a heap of up to 999 elements. position 0 is kept for size
Heap();
void add(int);
void remove();
void showRoot();
};

Also I think the constructor name should be case sensitive, so you should change the name of the constructor to Heap. Also, the constructor has no return value!

[Despo]

Thanks for the help... I'll try it!!! =)