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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.  if(n<0){
  6.  	return 3;
  7.  }
  8.  else if(n==1){
  9.  	return 0;
  10.  }
  11.  else if(n==2){
  12.  	return 2;
  13.  }
  14.  else{
  15.  	return rec(n-2)+rec(n-3);
  16.  }
  17. }
  18.  
  19. int main(void) {
  20.     int n_max = 50; 
  21.     int an;
  22.     printf("an%n==0となるnの値\n");
  23.     for(int n = 1; n <= n_max; n++){
  24.     	an=rec(n);
  25.     	if(an%n==0){
  26.           printf("%d, ", n);
  27.     	}
  28.     }
  29.  
  30. 	return 0;
  31. }
  32.  
  33.  
Success #stdin #stdout 0.02s 5324KB
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Standard input is empty
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an==0となるnの値
1, 2, 3, 8, 9,
https://ideone.com/5unMoh
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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