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- #include <stdio.h>
- #include <math.h>
- #define NUM 100000
- int main(void) {
- int prime[NUM + 1];
- int i, j, Limit;
- for (i=2; i <= NUM; i++) {
- prime[i] = 1;
- }
- Limit = (int)sqrt((double)NUM);
- for (i=2; i <= Limit; i++) {
- if (prime[i] == 1) {
- for (j=i*2; j <= NUM; j++) {
- if (j % i == 0) {
- prime[j] = 0;
- }
- }
- }
- }
- for (i = 2; i <= NUM; i++ ) {
- if (prime[i] == 1) {
- printf("%d", i);
- printf("\n");
- }
- }
- printf("\n");
- }
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