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  1. #include <stdio.h>
  2. //練習問題E
  3. int tri(int n){
  4.  
  5. 	if(n==0)
  6. {
  7. 	return 0;
  8. }
  9. else if(n==1){
  10. 	return 0;
  11. }
  12. else if(n==2){
  13. 	return 1;
  14. }
  15. else 
  16. return tri(n-1)+tri(n-2)+tri(n-3);
  17. }
  18.  
  19.  
  20.  
  21.  
  22.  
  23. int main(void) {
  24. 	int n = 7;
  25. 	int x;
  26. 	x=tri(n);
  27.     printf("数列Tnについて, n=%dのときの値は%d\n", n, x);
  28. 	return 0;
  29. }
  30.  
Success #stdin #stdout 0s 5312KB
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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/niSkDM
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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