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  1. #include <stdio.h>
  2. //練習問題E
  3.  
  4. int tri(int n)
  5. {
  6.  
  7. if(n==0)
  8. {
  9. return 0;
  10. }
  11. else if(n==1)
  12. {
  13. return 0;
  14. }
  15.  
  16. else if(n==2)
  17. {
  18. return 1;
  19. }
  20. return tri(n-1)+tri(n-2)+tri(n-3);
  21. }
  22.  
  23.  
  24.  
  25.  
  26. int main(void) {
  27. 	int n = 7;
  28.     printf("数列Tnについて, n=%dのときの値は%d\n", n, tri(n));
  29. 	return 0;
  30. }
  31.  
Success #stdin #stdout 0s 5300KB
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Standard input is empty
stdout
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数列Tnについて, n=7のときの値は13
https://ideone.com/sqzcYY
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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