fork download
copy 
  1. #include <stdio.h>
  2. //a{n+1} = -2a{n} + 4, a{0}=2(再帰なし版)
  3. int kannsuu(int n){
  4. 	int an = 2;
  5. 	for (int i=0;i<n;i++){
  6. 		an = -2*an+4;
  7. 	}
  8. 	return an;
  9. }
  10.  
  11. int main (void){
  12. 	int n = 4;
  13. 	printf("数列a%dの値は%d\n",n,kannsuu(n));
  14. 	return 0;
  15. }
  16.  
  17.  
  18.  
Success #stdin #stdout 0s 5284KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
数列a4の値は12
https://ideone.com/baf5Yx
language:
C (gcc 8.3)
created:
72 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!