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 FALSE,
because February only holds 28 days in a non leap year.
Syntax
int checkdate(struct date * datep);
Arguments
struct date * datep
Pointer to the date structure that is to be checked.
Returns
OK
When the date is valid.
ERROR
When the date is invalid.
Example
#include "lib.h"#include <stdio.h>void main(void){struct date d;
d.da_year=2002;
d.da_mon=2;while(1){
d.da_day=29;// not 29 days in non leap yearif( checkdate(&d )== OK )printf("\fDate ok!!\n");elseprintf("\fIllegal Date!!");while(!kbhit())
idle();
resetkey();
d.da_day=28;if( checkdate(&d )== OK )printf("\fDate ok!!\n");elseprintf("\fIllegal Date!!");while(!kbhit())
idle();
resetkey();}}
