fork download
copy 
  1. #include <stdio.h>
  2.  
  3. //a{n}=2a_{n-1}+3, a{0}=-2(再帰無し版)
  4. int main(void) {
  5.     int n,an;
  6.     int i;
  7.  
  8.     n = 4;
  9.     an = -2;
  10.  
  11.     for(i = 1; i <= n; i++){
  12.         an = 2 * an + 3;
  13.     }
  14.  
  15.     printf("数列anの%d番目の値は%d\n", n, an);
  16.     return 0;
  17. }
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/1qezfB
language:
C (gcc 8.3)
created:
19 hours 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!