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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. 	if(n==1)
  8. 	return 0;
  9.  
  10. 	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 5320KB
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/dzdbdc
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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