help with fraction array

Hi all,

I'm stumped here. I've been sitting here for hours trying to create a stack array that asks the user for fractions and returns them in a stack. I'm incorporating a class fraction to do this, but I'm running into a number of errors. Would you mind taking a look at my code and pointing out any glaring problems are...ANY HELP IS GREATLY APPRECIATED!!!!:

CODE:
#include <iostream>
using namespace std;

const int MAX=3;
//////////////////////////////////////////////////
class fraction
{
private:
int n;
int d;
public:
fraction():n(0), d(1)
{}

fraction(int nn, int dd):
n(nn), d(dd)
{}
void getfrac()
{char dummy;
cin >> n >> dummy >> d;}
void printfrac()
{cout << n << "/" << d;}
};
//////////////////////////////////////////////////
class stack
{private:
fraction farray[MAX];
fraction top;

public:
stack()
{top = -1;}
void push(fraction var)
{farray[++top] = var;}
int pop()
{return farray[top--];
}

};
//////////////////////////////////////////////////
int main()
{ stack s1;
fraction f1;
cout << "Enter a fraction in a/b format: ";
s1.push(f1.getfrac);
cout << "Enter a fraction in a/b format: ";
s1.push(f1.getfrac);
cout << "Enter a fraction in a/b format: ";
s1.push(f1.getfrac);
cout << "1: " << s1.pop(f1.printfrac) << endl;
cout << "2: " << s1.pop(f1.printfrac) << endl;
cout << "3: " << s1.pop(f1.printfrac) << endl;
return 0;
}


Here are my errors:
c:\Documents and Settings\Picc\Desktop\C++\fraction_stack.cpp(31) : error C2679: binary '=' : no operator found which takes a right-hand operand of type 'int' (or there is no acceptable conversion)
c:\Documents and Settings\Picc\Desktop\C++\fraction_stack.cpp(34) : error C2675: unary '++' : 'fraction' does not define this operator or a conversion to a type acceptable to the predefined operator
c:\Documents and Settings\Picc\Desktop\C++\fraction_stack.cpp(36) : error C2676: binary '--' : 'fraction' does not define this operator or a conversion to a type acceptable to the predefined operator
c:\Documents and Settings\Picc\Desktop\C++\fraction_stack.cpp(45) : error C2664: 'stack:ush' : cannot convert parameter 1 from 'void (void)' to 'fraction'
No constructor could take the source type, or constructor overload resolution was ambiguous
c:\Documents and Settings\Picc\Desktop\C++\fraction_stack.cpp(47) : error C2664: 'stack:ush' : cannot convert parameter 1 from 'void (void)' to 'fraction'
No constructor could take the source type, or constructor overload resolution was ambiguous
c:\Documents and Settings\Picc\Desktop\C++\fraction_stack.cpp(49) : error C2664: 'stack:ush' : cannot convert parameter 1 from 'void (void)' to 'fraction'
No constructor could take the source type, or constructor overload resolution was ambiguous
c:\Documents and Settings\Picc\Desktop\C++\fraction_stack.cpp(50) : error C2660: 'stack:op' : function does not take 1 arguments
c:\Documents and Settings\Picc\Desktop\C++\fraction_stack.cpp(51) : error C2660: 'stack:op' : function does not take 1 arguments
c:\Documents and Settings\Picc\Desktop\C++\fraction_stack.cpp(52) : error C2660: 'stack:op' : function does not take 1 arguments