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  1. #include <stdio.h>
  2. // 練習問題E
  3. int tri(int n) {
  4.     if (n == 0 || n == 1) {
  5.         return 0; 
  6.     }
  7.     else if(n == 2) {
  8.         return 1; 
  9.     }
  10.     return tri(n - 1) + tri(n - 2) + tri(n - 3);
  11. }
  12.  
  13. int main(void) {
  14.     int n = 7;
  15.     printf("数列Tnについて、n=%dのときの値は%d\n", n, tri(n));
  16.     return 0;
  17. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin 
Standard input is empty
stdout 
数列Tnについて、n=7のときの値は13
https://ideone.com/jpouX3
language:
C (gcc 8.3)
created:
10 days ago
visibility:
public

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