2 /* An example that finds all primes between 2 and limit. */
4 define primes (limit) {
12 for ( p=5; p <= limit; p += 2) {
15 for ( i = 1; i < num && prime[i] <= root; i++ ) {
16 if ( p % prime[i] == 0 ) {
29 print "\ntyping 'twins (10)' will print all twin primes less than 10.\n"
31 define twins (limit) {
36 for (i=1; prime[i] > 0; i++) {
37 if ((prime[i]+2) == prime[i+1]) \
38 print "twins are ", prime[i], " and ", prime[i+1], "\n"