This function checks if the date structure passed to the function holds a valid date.

Syntax

short CheckDate(
  struct date_struct *datep
);

Parameters

datep: [in] Pointer to the date_struct structure that is to be checked.

Return value

Returns OK if the date is valid, ERROR otherwise.

Remarks

Checks if the date structure passed to the function holds a valid date.
For instance, if you specify a date of 29 February 2002, the function will return ERROR, because February only holds 28 days in a non-leap year.
All dates that are not bewteen 1 January 2000 and 31 December 2099 will also return ERROR.

Requirements

Header file:

lib.h

Library file:

libSTARTUPOPH5000.a

Sample

#include <stdio.h>
#include "lib.h"

void main( void )
{
    struct date_struct d;

    d.da_year = 2008;
    d.da_mon = 2;
    for(;;)
    {
        d.da_day = 29; // not 29 days in non leap year
        if( CheckDate( &d ) == OK )
            printf("\fDate ok!!\n");
        else
            printf("\fIllegal Date!!");
        while( !kbhit() )
            Idle();
        ResetKey();

        d.da_day = 28;
        if( CheckDate( &d ) == OK )
            printf("\fDate ok!!\n");
        else
            printf("\fIllegal Date!!");
        while( !kbhit() )
            Idle();
        ResetKey();
    }
}