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  1. #include <stdio.h>
  2. //練習問題E
  3. int tri(int n){
  4.      if(n==0){
  5.      return 0;
  6. }
  7.      else if(n==1){
  8.      return 0;
  9. }
  10.      else if(n==2){
  11.      return 1;
  12. }
  13.      else{
  14.      return tri(n-1)+tri(n-2)+tri(n-3);
  15. }
  16. }
  17.  
  18.  
  19. int main(void) {
  20. 	int n = 7;
  21.     printf("数列Tnについて, n=%dのときの値は%d\n", n, tri(n));
  22. 	return 0;
  23. }
  24.  
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin 
Standard input is empty
stdout 
数列Tnについて, n=7のときの値は13
https://ideone.com/A27IpZ
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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