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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.  
  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 0.01s 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/ZHbg8t
language:
C (gcc 8.3)
created:
13 days ago
visibility:
public

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