C Language Development Kit/Functions/SetAlarm

void SetAlarm(struct time * timep, unsigned short onoff);

// The following example demonstrates the use of SetAlarm() function.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lib.h"
 
void main( void )
{
    struct time at = {0};
    struct time t = {0};
    int pos;
    int key;
    static char string[ 5 + 1];
 
    cursor( ON );
    cursor( NOWRAP );
    resetkey();
 
    for(;;)
    {
        strcpy( string, "00:00");
        pos = 0;
        for(;;)
        {
            printf("\fset alarm\n%s\n\n1=UP \trdone\tr 2=MV", string);
            gotoxy( pos, 1);
            while( ( key = getchar()) == EOF)
                idle();
            if( key == TRIGGER_KEY)
            {
                at.ti_hour = (unsigned char) atoi( string );
                at.ti_min = (unsigned char) atoi( string + 3 );
                at.ti_sec = 0;
                break;
            }
            if( key == Q2_KEY)
            {
                pos++;
                if( pos == 2)
                    pos++;
                if( pos > 4)
                    pos=0;
                continue;
            }
            if( key == Q1_KEY)
            {
                switch( pos )
                {
                    case 0:
                        string[0]++;
                        if( string[0] > '2')
                            string[0] = '0';
                        break;
                    case 1:
                        if( string[0] == '2')
                        {
                            string[1]++;
                            if( string[1] > '4')
                                string[1] = '0';
                        }
                        else
                        {
                            string[1]++;
                            if( string[1] > '9')
                                string[1] = '0';
                        }
                        break;
                    case 3:
                        string[3]++;
                        if( string[3] > '5')
                            string[3] = '0';
                        break;
                    case 4:
                        string[4]++;
                        if( string[4] > '9')
                            string[4] = '0';
                        break;
                }
            }
        }
        SetAlarm( , ON);
        printf("\fAL TIME SET\n%02d:%02d\nwaiting...", at.ti_hour, at.ti_min);
        for(;;)
        {
            gettime(  );
            resetkey();
            //
            // Check to see if terminal is woken by the Alarm function
            //
            if( (t.ti_hour == at.ti_hour) && (t.ti_min == at.ti_min))
            {
                //
                // Wakeup was done by alarm...
                //
                for(;;)
                {
                    printf("\fALARM\nALARM");
                    sound( TSTANDARD, VHIGH, SERROR, SLOW, SMEDIUM, SHIGH, SLOW, SMEDIUM, SHIGH, 0);
                    delay( 50 );
                    putchar('\f');
                    delay( 50 );
                    if( kbhit())
                    {
                        resetkey();
                        break;
                    }
                }
                break;
            }
            delay( 50 );
        }
    }
}