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  1. #include <stdio.h>
  2. main()
  3. {
  4. int i = 0;
  5. int j;
  6. scanf("%d",&j);
  7. while (i<j)
  8. i=i+4;
  9. printf("%d不小於4的倍數=%d",j,i);
  10. }
Success #stdin #stdout 0s 4536KB
stdin
21
stdout
21不小於4的倍數=24