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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. else if(n==1)
  7. return 0;
  8. else if(n==2)
  9. return 1;
  10. else
  11. return tri(n-1)+tri(n-2)+tri(n-3);
  12.  
  13. }
  14.  
  15.  
  16. int main(void) {
  17. 	int n = 7;
  18.     printf("数列Tnについて, n=%dのときの値は%d\n", n, tri(n));
  19. 	return 0;
  20. }
  21.  
Success #stdin #stdout 0s 5308KB
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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/O4AIWw
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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