fork download
copy 
  1. #include <stdio.h>
  2.  
  3. //a{n} = 2a{n-1} + 3, a{0}=-2(再帰あり版)
  4. int rec(int n){
  5.     if(n == 0){
  6.         return -2;
  7.     }
  8.     else{
  9.         return 2 * rec(n - 1) + 3;
  10.     }
  11. }
  12.  
  13. int main(void) {
  14.     int n = 4;
  15.     printf("数列anの%d番目の値は%d\n", n, rec(n));
  16.     return 0;
  17. }
  18.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
数列anの4番目の値は13
https://ideone.com/ZCoA8k
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!