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  1. #include<stdio.h>
  2. int main()
  3. {
  4. int num,r,c,m=0;
  5. printf("Enter structure number : \n");
  6. scanf("%d", &num);
  7.  
  8. for(r=1; r<=num; r++)
  9. {
  10. if(r%2 != 0){
  11. m++;
  12. for(c=1; c<=m; c++)
  13. printf("%d ",r);
  14. printf("\n");
  15. }
  16. }
  17. return 0;
  18. }
Success #stdin #stdout 0s 2056KB
stdin
9
stdout
Enter structure number : 
1 
3 3 
5 5 5 
7 7 7 7 
9 9 9 9 9