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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. 	}else if(n==1){
  7. 		return 0;
  8. 	}
  9.  
  10. 	else if(n==2){
  11. 		return 1;
  12. 	}else
  13. 	return tri(n-1)+tri(n-2)+tri(n-3);
  14. }
  15.  
  16.  
  17.  
  18. int main(void) {
  19. 	int n = 7;
  20.     printf("数列Tnについて, n=%dのときの値は%d\n", n, tri(n));
  21. 	return 0;
  22. }
  23.  
Success #stdin #stdout 0.01s 5284KB
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Standard input is empty
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数列Tnについて, n=7のときの値は13
https://ideone.com/9nt9kC
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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