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  1. #include <stdio.h>
  2. int tri(int n){
  3. 	if(n==0){
  4. 		return 0;
  5. 	}
  6. 		else if(n==1){
  7. 			return 0;
  8. 		}
  9. 			else if(n==2){
  10. 				return 1;
  11. 			}
  12. 	return tri(n-1)+tri(n-2)+tri(n-3);
  13. }
  14.  
  15. int main(void) {
  16. 	int n = 7;
  17.     printf("数列Tnについて, n=%dのときの値は%d\n", n, tri(n));
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout 0s 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/hHTTQF
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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