Help On Date.h Please

hi everyone can someone tell me what is the problem of this code...

Code:

#include <iostream>
#include <cstdlib>
#include "date.h"
using namespace std;
int NextSatVal(Date& today);
int main()
{
    int d, m, y;
    
    cout<<"Enter: ";
    cin>>d>>m>>y;
           
    Date today(m, d, y);                  
    
    NextSatVal(Date& today); 
     
    system("pause");
    return 0;
}    

int NextSatVal(Date& today)
{
    while(today.Month() != 2 && today.Day() != 14 && today.DayName() != "Saturday")
    {
        today++;
    }
    return today.year();
}

my aim of this code is to find the next valentine in saturday.
thank you

i ran this program and change it but end up with this line of error
[code[

NextSatVal(Date& today);

[/code]

When you call the function, don't include the type:
NextSatVal(today); is sufficient.