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  1. #include <stdio.h>
  2. //課題４
  3. int rec(int n){
  4. //rec内を完成させてください
  5.   if(n == 0){
  6.         return 3;
  7.     }
  8.     else if(n == 1){
  9.         return 0;
  10.     }
  11.  
  12.     else if(n == 2){
  13.     	return 2;
  14.     }
  15.  
  16.     else{
  17.         return rec(n-2) + rec(n-3);
  18.     }
  19. }
  20.  
  21.  
  22.  
  23. int main(void) {
  24.     int n = 50;
  25.     for(int i = 1; i <= n; i++){
  26.     	int t = rec(i);
  27.     	if(t%i==0){
  28.     	printf("%d,",i);   
  29.     	}
  30.     }
  31.  
  32. 	return 0;
  33. }
  34.  
  35.  
Success #stdin #stdout 0.01s 5324KB
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stdin
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Standard input is empty
stdout
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1,2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,
https://ideone.com/pl7GiF
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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