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May 31st, 2016
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  1. #include <stdio.h>
  2.  
  3. void primefactor(int number) {
  4. // 아래 코드를 추가 하여 prime factor가 출력하시오.
  5. int nn;
  6. for(int n=1; n <=number; n++){
  7. if(number % n == 0){
  8. //printf("%d ",n);
  9. int sosu = 0;
  10. for(nn=1;nn<=n;nn++){
  11. if(n%nn==0){
  12. sosu++;
  13. }
  14. }
  15. if(sosu ==2){
  16. printf("%d ",n);
  17. }
  18. }
  19. }
  20. }
  21.  
  22. int main (void)
  23. {
  24. int num;
  25. while (num!=0){
  26. printf("Input Number!! \n");
  27. scanf("%d",&num);
  28. printf("%d : ", num);
  29. primefactor(num);
  30. printf("\n");
  31. printf("Input Number '0' to exit this program\n");
  32. printf("\n");
  33. }
  34. return 0;
  35. }
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