fork(1) download
copy 
  1. #include <stdio.h>
  2.  
  3. #define N (20)
  4.  
  5. int main()
  6. {
  7.     int arr[N][N];
  8.     int n;
  9.     int i, j;
  10.  
  11.     scanf("%d", &n);
  12.  
  13.     if(n > N)
  14.         return 1;
  15.  
  16.     // Fill array
  17.     for(i = n - 1; i >= 0; --i)
  18.     {
  19.         for(j = 0; j <= i; ++j)
  20.         {
  21.             arr[i][j] = i * n + j;
  22.         }
  23.     }
  24.  
  25.     // Print out
  26.     for(i = 0; i < n; ++i)
  27.     {
  28.         for(j = 0; j < n - i - 1; ++j)
  29.         {
  30.             printf("  ");
  31.         }
  32.  
  33.         for(j = 0; j <= i; ++j)
  34.         {
  35.             printf("%4d", arr[i][j]);
  36.         }
  37.  
  38.         printf("\n");
  39.     }
  40.  
  41.     return 0;
  42. }
Success #stdin #stdout 0s 1792KB
comments (?)
stdin
copy 
5
stdout
copy 
           0
         5   6
      10  11  12
    15  16  17  18
  20  21  22  23  24
https://ideone.com/eJ1xsa
language:
C (gcc 8.3)
created:
12 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!