[C++] Need help regarding classes

[klamor]

Ok, so basically i'm trying to call a function of a class within another function of that same class. If anybody could help me I would really appreciate it

#include<iostream>
using namespace std;

class Hugeint
{
    int hint[4][4];

public:
    Hugeint();
    void display();
    void add(int,int);
    int convert(int,int);
};

Hugeint::Hugeint()
{
    int placeholder[4]={1,2,3,4};
    for(int x=0; x<4; x++)
    {
        for(int y=0; y<4; y++)
        {
            hint[x][y]=placeholder[x];
        }
    }
}

void Hugeint::display()        //Displays the array in two dimensions.
{
    for(int x=0; x<4; x++)
    {
        for(int y=0; y<4; y++)
        {
            cout<<hint[x][y];
        }
        cout<<endl;
    }
}

void Hugeint::add(int num1,int num2)    //Calls convert function for both numbers to get in int form, then adds.
{
    int n1, n2, first, second, sent, total;
    n1 = num1+1;
    n2 = num2+1;
    sent = n1;
    first = h1.convert(sent);
    sent = n2;
    second = h1.convert(sent);
    total = first+second;
    cout<<total<<endl;

}

int Hugeint::convert(int sent)//Converts the numbers chosen in from hint into ints respectively.
{
    int int1=0;
    for(int pnt=0; pnt<4; pnt++)
    {
        for(int zeros=3; z<=0; z--)//How many zeros to add based on the placement of the number.
        {                           //4321 = 4000 + 300 + 20 + 1
            if(zeros==3)
                int1=int1+(hint[sent][pnt]*1000);
            if(zeros==2)
                int1=int1+(hint[sent][pnt]*100);
            if(zeros==1)
                int1=int1+(hint[sent][pnt]*10);
            if(zeros==0)
                int1=int1+hint[sent][pnt];
        }
    }
    return int1;
}

int main()
{
    int num1, num2;
    Hugeint h1;
    h1.display();
    system("PAUSE");
    cout<<"What would you like add?"<<endl;
    cin>>num1;
    cout<<' ';
    cin>>num2;
    h1.add(num1,num2);
    return 0;
}

In the function "void Hugeint::add()" I'm getting an error that states "h1 - undeclared ifentifier".

[[Blinded]]

You could use this->(class function) or you leave it out ... ( in your Classfunctions )
NO h1.

[Swiftle]

You have several errors. First you have:

first = h1.convert(sent)

h1 isn't declared in this scope and secondly convert requires 2 parameters.