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  1. #include <stdio.h>
  2. //練習問題E
  3. int tri(n){
  4. if(n==0){
  5. return 0;
  6. }
  7. else if(n==1){
  8. return 0;
  9. }
  10. else if(n==2){
  11. return 1;
  12. }
  13. else{
  14. return tri(n-3)+tri(n-2)+tri(n-1);
  15. }
  16. }
  17. int main(void) {
  18. 	int n = 7;
  19.     printf("数列Tnについて, n=%dのときの値は%d\n", n, tri(n));
  20. 	return 0;
  21. }
  22.  
Success #stdin #stdout 0s 5316KB
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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/Sv00er
language:
C (gcc 8.3)
created:
13 days ago
visibility:
public

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