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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.  
  20. int main(void) {
  21. 	int n = 7;
  22.     printf("数列Tnについて, n=%dのときの値は%d\n", n, tri(n));
  23. 	return 0;
  24. }
  25.  
Success #stdin #stdout 0s 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/gkXYjW
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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