fork download
copy 
  1.  
  2. #include <stdio.h>
  3.  
  4. // 課題4
  5. int rec(int n) {
  6.     if (n == 0) {
  7.         return 3;
  8.     }
  9.     else if (n == 1) {
  10.         return 0;
  11.     }
  12.     else if (n == 2) {
  13.         return 2;
  14.     }
  15.     else {
  16.         return rec(n-2) + rec(n-3);
  17.     }
  18. }
  19. int main(void) {
  20.     for (int i = 1; i < 50; i++) {
  21.         int a = rec(i);
  22.         if (a % i == 0) {
  23.             printf("n=%d, a%d=%d\n", i, i, a);
  24.         }
  25.     }
  26.     return 0;
  27. }
  28.  
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
n=1, a1=0
n=2, a2=2
n=3, a3=3
n=5, a5=5
n=7, a7=7
n=11, a11=22
n=13, a13=39
n=17, a17=119
n=19, a19=209
n=23, a23=644
n=29, a29=3480
n=31, a31=6107
n=37, a37=33004
n=41, a41=101639
n=43, a43=178364
n=47, a47=549289
https://ideone.com/4b8mw5
第5回　課題４
language:
C (gcc 8.3)
created:
18 hours ago
visibility:
public

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!