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  1. #include <stdio.h>
  2. //課題3
  3. int rec(int n){
  4. //rec内を完成させてください
  5.  static int a[51] = {0};
  6.  
  7.     if (n == 0) return 3;
  8.     if (n == 1) return 0;
  9.     if (n == 2) return 2;
  10.     if (a[n] != 0) return a[n];
  11.  
  12.     a[n] = rec(n - 2) + rec(n - 3);
  13.     return a[n];
  14. }
  15.  
  16. int main(void) {
  17.     int n = 50; 
  18.     for(int i = 0; i <= n; i++){
  19.         printf("%d, ", rec(i));
  20.     }
  21.  
  22. 	return 0;
  23. }
  24.  
  25.  
Success #stdin #stdout 0s 5304KB
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stdin
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Standard input is empty
stdout
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3, 0, 2, 3, 2, 5, 5, 7, 10, 12, 17, 22, 29, 39, 51, 68, 90, 119, 158, 209, 277, 367, 486, 644, 853, 1130, 1497, 1983, 2627, 3480, 4610, 6107, 8090, 10717, 14197, 18807, 24914, 33004, 43721, 57918, 76725, 101639, 134643, 178364, 236282, 313007, 414646, 549289, 727653, 963935, 1276942,
https://ideone.com/dJaH5n
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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