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Aug 17th, 2019
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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main (void)
  5. {
  6. int n,q,w;
  7. while(1)
  8. {
  9. printf("輸入小於10的正整數(-1結束):");
  10. scanf("%d",&n);
  11. if(n == -1) {
  12. break;
  13. }
  14. if(n >= 10 || n < 1) {
  15. continue;
  16. }
  17.  
  18. for(q=1; q<=n; q++)
  19. {
  20. for(w=1; w<=n; w++)
  21. {
  22. printf("%d*%d=%2d\t",w,q,w*q);
  23. }
  24. printf("\n");
  25. }
  26. }
  27. return 0;
  28. }
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