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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. // your code goes here
  5. int a,b;
  6. for(a=1; a<10; a++){
  7. printf("%dの段: ",a);
  8. for(b=1; b<10; b++){
  9. printf("%d ",a*b);
  10. }
  11. printf("\n");
  12. }
  13. return 0;
  14. }
  15.  
Success #stdin #stdout 0s 5276KB
stdin
Standard input is empty
stdout
1の段: 1 2 3 4 5 6 7 8 9 
2の段: 2 4 6 8 10 12 14 16 18 
3の段: 3 6 9 12 15 18 21 24 27 
4の段: 4 8 12 16 20 24 28 32 36 
5の段: 5 10 15 20 25 30 35 40 45 
6の段: 6 12 18 24 30 36 42 48 54 
7の段: 7 14 21 28 35 42 49 56 63 
8の段: 8 16 24 32 40 48 56 64 72 
9の段: 9 18 27 36 45 54 63 72 81