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Time the execution

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git-svn-id: svn://svn.cc65.org/cc65/trunk@784 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2001-07-14 14:45:04 +00:00
parent f063c4e844
commit 0bb81e5c36
1 changed files with 21 additions and 2 deletions
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23
samples/sieve.c
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@ -4,7 +4,10 @@
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <time.h>
#include <conio.h>
@ -30,11 +33,17 @@ static unsigned char Sieve[COUNT];
int main (void)
{
/* Clock variable */
clock_t Ticks;
/* This is an example where register variables make sense */
register unsigned char* S;
register unsigned I;
register unsigned J;
/* Read the clock */
Ticks = clock();
/* Execute the sieve */
I = 2;
while (I < SQRT_COUNT) {
@ -50,17 +59,27 @@ int main (void)
++I;
}
/* Calculate the time used */
Ticks = clock() - Ticks;
/* Print the time used and wait for a key */
printf ("Time used: %lu ticks\n", Ticks);
printf ("Press Q to quit, any other key for list\n");
if (toupper (cgetc()) == 'Q') {
exit (EXIT_SUCCESS);
}
/* Print the result */
for (I = 2; I < COUNT; ++I) {
if (Sieve[I] == 0) {
printf ("%4d\n", I);
}
if (kbhit() && cgetc() == 'q') {
if (kbhit() && toupper (cgetc()) == 'q') {
break;
}
}
return 0;
return EXIT_SUCCESS;
}