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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     for (int m = 0; m <= 4; m++) {
  5.         for (int n = 0; n <= 4 - m; n++) {
  6.             printf(" ");
  7.         }
  8.         for (int a = 0; a < m * 2 + 1; a++) {
  9.             printf("*");
  10.         }
  11.         printf("\n");
  12.     }
  13.     for (int m = 0; m <= 4; m++) {
  14.         for (int n = 0; n <= m; n++) {
  15.             printf(" ");
  16.         }
  17.         for (int a = 0; a < 9 - m * 2; a++) {
  18.             printf("*");
  19.         }
  20.         printf("\n");
  21.     }
  22.  
  23.     return 0;
  24. }
Success #stdin #stdout 0.01s 5320KB
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stdin
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Standard input is empty
stdout
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     *
    ***
   *****
  *******
 *********
 *********
  *******
   *****
    ***
     *
https://ideone.com/R86v2X
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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