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  1. #include <stdio.h>
  2.  
  3. int trb(int n) {
  4. 	if (n == 0) {
  5. 		return 0;
  6. 	} else if(n == 1) {
  7. 		return 0;
  8. 	} else if(n == 2) {
  9. 	    return 1;
  10. 	} else {
  11. 		return trb(n - 1) + trb(n - 2) + trb(n -3);
  12. 	}
  13. }
  14.  
  15. int main(void) {
  16. 	int n;
  17. 	scanf("%d", &n);
  18. 	printf("漸化式の第%d項は%dです\n", n, trb(n));
  19. 	return 0;
  20. }
  21.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
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6
stdout
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漸化式の第6項は7です
https://ideone.com/iNuY9X
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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