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#include <common.h>
/**
** User function main #3: exit, sleep, write
**
** Prints its ID, then loops N times sleeping and printing, then exits.
**
** Invoked as: main3 x n s
** where x is the ID character
** n is the iteration count
** s is the sleep time in seconds
*/
USERMAIN( main ) {
char ch = '3'; // default character to print
int nap = 10; // default sleep time
int count = 30; // iteration count
char buf[128];
// process the command-line arguments
switch( argc ) {
case 4: nap = str2int( argv[3], 10 );
// FALL THROUGH
case 3: count = str2int( argv[2], 10 );
// FALL THROUGH
case 2: ch = argv[1][0];
break;
default:
sprint( buf, "main3: argc %d, args: ", argc );
cwrites( buf );
for( int i = 0; i <= argc; ++i ) {
sprint( buf, " %s", argv[argc] ? argv[argc] : "(null)" );
cwrites( buf );
}
cwrites( "\n" );
}
// announce our presence
int n = swritech( ch );
if( n != 1 ) {
sprint( buf, "=== %c, write #1 returned %d\n", ch, n );
cwrites( buf );
}
write( CHAN_SIO, &ch, 1 );
for( int i = 0; i < count ; ++i ) {
sleep( SEC_TO_MS(nap) );
write( CHAN_SIO, &ch, 1 );
}
exit( 0 );
return( 42 ); // shut the compiler up!
}
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