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/*
** TIMEGETC.C - waits for a given number of seconds for the user to press
** a key. Returns the key pressed, or EOF if time expires
**
** by Bob Jarvis
*/
#include <stdio.h>
#include <time.h>
#include <conio.h>
int timed_getch(int n_seconds)
{
time_t start, now;
start = time(NULL);
now = start;
while(difftime(now, start) < (double)n_seconds && !kbhit())
{
now = time(NULL);
}
if(kbhit())
return getch();
else return EOF;
}
#ifdef TEST
void main(void)
{
int c;
printf("Starting a 5 second delay...\n");
c = timed_getch(5);
if(c == EOF)
printf("Timer expired\n");
else printf("Key was pressed, c = '%c'\n", c);
}
#endif /* TEST */
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