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  1. #include<stdio.h>
  2. int main()
  3. {
  4.     int n,a,b,c ;
  5.     scanf("%d",&n) ;
  6.     int w=n*2-1 ;
  7.     for(a=0;a<w;a++) 
  8.     {
  9.         if(a<=n)
  10.         {
  11.             for(b=0;b<n-a;b++)
  12.         {
  13.             printf(" ") ;
  14.         }
  15.             for(c=0;c<2*a-1;c++)
  16.         {
  17.             printf("*") ;
  18.         }
  19.             printf("\n") ;
  20.         }
  21.         else
  22.         {
  23.             for(b=a-n;b>0;b--)
  24.         {
  25.             printf(" ") ;
  26.         }
  27.             for(c=a-b;c>0;c--)
  28.         {
  29.             printf("*") ;
  30.         }
  31.             printf("\n") ;
  32.         }
  33.     }
  34.     return 0 ;
  35. }
Success #stdin #stdout 0s 5320KB
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stdout
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    *
   ***
  *****
 *******
*********
 ******
  *******
   ********
https://ideone.com/9imDZJ
language:
C (clang 8.0)
created:
1 day ago
visibility:
public

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