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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. 	if(n == 1)
  7. 		return 0;
  8. 	if(n == 2)
  9. 		return 1;
  10. 	else 
  11. 		return tri(n-1)+tri(n-2)+tri(n-3);
  12. }
  13.  
  14. int main(void) {
  15. 	int n = 7;
  16.     printf("数列Tnについて, n=%dのときの値は%d\n", n, tri(n));
  17. 	return 0;
  18. }
  19.  
Success #stdin #stdout 0s 5324KB
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/Qh4Eij
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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