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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int n;//          *****
  5.           //          ** **
  6.         //            *   *
  7.     printf("Enter the number of rows: \n");
  8.     scanf("%d",&n);
  9.  
  10.     int nst=n-1;
  11.     int nsp=1;
  12.  
  13.       for(int r=1;r<=2*n-1;r++)
  14.          printf("*");
  15.       printf("\n");
  16.  
  17.     for(int i=1;i<=n;i++){
  18.  
  19.       for(int j=1;j<=nst;j++)
  20.         printf("*");
  21.  
  22.        for(int k=1;k<=nsp;k++)
  23.         printf(" ");
  24.  
  25.       for(int j=1;j<=nst;j++)
  26.         printf("*");
  27.  
  28.          nst--;
  29.          nsp+=2;
  30.  
  31.     printf("\n");
  32.  
  33.     }
  34.  
  35. 	return 0;
  36. }
  37.  
Success #stdin #stdout 0.01s 5312KB
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stdin
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5
stdout
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Enter the number of rows: 
*********
**** ****
***   ***
**     **
*       *
https://ideone.com/EIwPxH
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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