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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int a,b=1;
  5. for(a=1;a<10;a++){
  6. for(b=1;b<=9;b++){
  7. printf(" %3d ",(b)*a);
  8. }
  9. printf("\n");
  10. }
  11. return 0;
  12. }
  13.  
Success #stdin #stdout 0s 5320KB
stdin
Standard input is empty
stdout
   1    2    3    4    5    6    7    8    9 
   2    4    6    8   10   12   14   16   18 
   3    6    9   12   15   18   21   24   27 
   4    8   12   16   20   24   28   32   36 
   5   10   15   20   25   30   35   40   45 
   6   12   18   24   30   36   42   48   54 
   7   14   21   28   35   42   49   56   63 
   8   16   24   32   40   48   56   64   72 
   9   18   27   36   45   54   63   72   81