fork download
copy 
  1. #include <stdio.h>
  2. //a{n+1} = -2a{n} + 4, a{0}=2(再帰あり版)
  3. int rec(int n){
  4. if(n==0){
  5. 	return 2;
  6. }
  7. else{
  8. 	return -2*rec(n-1)+4;
  9. }
  10. 	}
  11. int main(void) {
  12.     int n=4;
  13.     printf("数列a%dの値は%d\n", n, rec(n));
  14.    	return 0;
  15. }
  16.  
  17.  
Success #stdin #stdout 0s 5288KB
comments (?)
stdin
copy 
5
stdout
copy 
数列a4の値は12
https://ideone.com/NEdiAx
language:
C (gcc 8.3)
created:
12 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!