Calendar not working as plan

[td0g03]

Hello, I am trying to write up a calendar with no luck. Well, I am trying to test "calcJanFirst", but when I type in the year and send it to calcJanFirst I alway get the same number. No matter what year I put in. I believe I am sending the value incorrectly to calcJanFirst. Can someone check what i'm doing wrong please. Thank you.

/* 
    Print Calendar
 
*/
 
#include <stdio.h>
 
//    Function Declarations 
int  getYear      ( void );
int  calcJanFirst ( int year );
void printCalendar( int year, int JanFirst );
 
int  chooseDays   ( int year, int month );
int  isLeap       ( int year );
 
void printHeader  ( int year, int month );
int  printMonth   ( int firstDay, int days );
 
int main( void )
{
//    Local Declarations  
    int year, month,firstday,JanFirst;
 
//    Statements
    getYear();
 
 
    //printMonth(2, 29); // starting date and ending dates
     calcJanFirst(JanFirst);
 
 
 
    return 0;
}
 
 
 
/* ======================================================= */
/* This function prompts the user to enter a year: if it is 
   within the range 1000 to 3000 it is considered a valid year;
   otherwise, it prompts the user to enter another value, until 
   it is valid.
    PRE : nothing
    POST: year is returned
*/
int  getYear      (void)
{
//    Local Declarations
int year;
//    Statements 
 
    printf("Please enter a year between 1000 to 3000\n");
    scanf("%d",&year);
 
    if(!(year >=1000) || !(year <=3000))
    {
         while(year<1000 || year>3000)
         {
               printf("Please enter a year between 1000 to 3000\n");
               scanf("%d\n",&year); 
         }
 
    }
    return year;
}
 
/* ======================================================= */
/* This function determines the day of the week for 
   January first: 0 - Sunday, 1 - Monday, ... 6 - Saturday.
            - see formula at page 388
    PRE : year 
    POST: day of the week for Jan 1st returned
 
*/
int  calcJanFirst ( int year )
{
    int JanFirst;
 
    JanFirst = (((year - 1 ) * 365) + ((year - 1) % 4) - ((year - 1) % 100) + 
    ((year - 1) %400)+1)%7;
 
    printf("testing calcJanFirst %d",JanFirst);
     return JanFirst;
}
 
 

[DeMan]

1) I think you should save the resuklt of getYear (I'd use year rather than JanFirst....
2) I think you should pass this result to calcJanFirst

viz

int main (void) //if you like
{
  int year, month, JanFirst;  //etc
  year = getYear();  /this is why we have the year variable I would assume
  JanFirst = calcJanFirst(year);
  printf("The year is %d and JanFirst is %d", year, JanFirast);
}