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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int i,j,k;
  5. for(i=1;i<10;i++){
  6. for(j=1;j<10;j++){
  7. k=i*j;
  8. if(k<=9){
  9. printf(" %d ",k);
  10. }
  11. else{
  12. printf("%d ",k);
  13. }
  14.  
  15. }
  16. printf("\n");
  17. }
  18. return 0;
  19. }
  20.  
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