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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     // 上半部分的金字塔
  5.     for (int m = 0; m <= 4; m++) {
  6.         // 輸出空格
  7.         for (int n = 0; n <= 4 - m; n++) {
  8.             printf(" ");
  9.         }
  10.         // 輸出星號
  11.         for (int a = 0; a < m * 2 + 1; a++) {
  12.             printf("*");
  13.         }
  14.         printf("\n");
  15.     }
  16.  
  17.     // 下半部分的倒金字塔
  18.     for (int m = 1; m <= 4; m++) {
  19.         // 輸出空格
  20.         for (int n = 0; n <= m; n++) {
  21.             printf(" ");
  22.         }
  23.         // 輸出星號
  24.         for (int a = 0; a < 9 - m * 2; a++) {
  25.             printf("*");
  26.         }
  27.         printf("\n");
  28.     }
  29.  
  30.     return 0;
  31. }
Success #stdin #stdout 0.01s 5308KB
comments (?)
stdin 
Standard input is empty
stdout 
     *
    ***
   *****
  *******
 *********
  *******
   *****
    ***
     *
https://ideone.com/Awvjv9
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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