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Calculate time in seconds, not ticks. Implement pager output for primes.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3986 b7a2c559-68d2-44c3-8de9-860c34a00d81
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uz 2009-07-30 19:25:59 +00:00
parent a3eed9016f
commit 043acb1d98
1 changed files with 25 additions and 5 deletions
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28
samples/sieve.c
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@ -35,10 +35,20 @@ static unsigned char Sieve[COUNT];
static char ReadUpperKey (void)
/* Read a key from console, convert to upper case and return */
{
return toupper (cgetc ());
}
int main (void) int main (void)
{ {
/* Clock variable */ /* Clock variable */
clock_t Ticks; clock_t Ticks;
unsigned Sec;
unsigned Milli;
/* This is an example where register variables make sense */ /* This is an example where register variables make sense */
register unsigned char* S; register unsigned char* S;
@ -70,19 +80,29 @@ int main (void)
/* Calculate the time used */ /* Calculate the time used */
Ticks = clock() - Ticks; Ticks = clock() - Ticks;
Sec = (unsigned) (Ticks / CLOCKS_PER_SEC);
Milli = ((Ticks % CLOCKS_PER_SEC) * 1000) / CLOCKS_PER_SEC;
/* Print the time used */ /* Print the time used */
printf ("Time used: %lu ticks\n", Ticks); printf ("Time used: %u.%03u seconds\n", Sec, Milli);
printf ("Press Q to quit, any other key for list\n"); printf ("Q to quit, any other key for list\n");
/* Wait for a key and print the list if not 'Q' */ /* Wait for a key and print the list if not 'Q' */
if (toupper (cgetc()) != 'Q') { if (ReadUpperKey () != 'Q') {
/* Print the result */ /* Print the result */
J = 0;
for (I = 2; I < COUNT; ++I) { for (I = 2; I < COUNT; ++I) {
if (Sieve[I] == 0) { if (Sieve[I] == 0) {
printf ("%4d\n", I); printf ("%4d\n", I);
if (++J == 23) {
printf ("Q to quit, any other key continues\n");
if (ReadUpperKey () == 'Q') {
break;
} }
if (kbhit() && toupper (cgetc()) == 'Q') { J = 0;
}
}
if (kbhit() && ReadUpperKey == 'Q') {
break; break;
} }
} }