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  1. #include <stdio.h>
  2. //練習問題E
  3.  
  4. tri(int n){
  5. 	if(n == 0){
  6. 		return 0;
  7. 	}
  8. 	else if(n == 1){
  9. 		return 0;
  10. 	}
  11. 	else if(n == 2){
  12. 		return 1;
  13. 	}
  14. 	else return tri(n-1) + tri(n-2) + tri(n-3); 
  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 5320KB
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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/XNblub
language:
C (gcc 8.3)
created:
19 days ago
visibility:
public

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