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  1. #include <stdio.h>
  2.  
  3. /* フィボナッチ数列の第n項目を求める再帰関数 */
  4. int fibo(int n)
  5. {
  6.     /* 終了条件 */
  7.     if(n == 0 || n == 1) {
  8.         return 1;
  9.     }
  10.  
  11.     /* 再帰呼び出し */
  12.     return fibo(n - 1) + fibo(n - 2);
  13. }
  14.  
  15. int main(void)
  16. {
  17.     int i;
  18.  
  19.     /* 0～9を引数として呼び出す */
  20.     for(i = 0; i <= 9; i++) {
  21.         printf("fibo(%d) = %d\n", i, fibo(i));
  22.     }
  23.  
  24.     return 0;
  25. }
Success #stdin #stdout 0s 5312KB
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stdin
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Standard input is empty
stdout
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fibo(0) = 1
fibo(1) = 1
fibo(2) = 2
fibo(3) = 3
fibo(4) = 5
fibo(5) = 8
fibo(6) = 13
fibo(7) = 21
fibo(8) = 34
fibo(9) = 55
https://ideone.com/bWnYOj
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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