fork download
copy 
  1. #include <stdio.h>
  2. //再帰を用いて1からnまでの二乗和1^2 + 2^2 + 3^2 + ... + n^2を計算する
  3. int rec(int n){
  4.     if (n == 1){
  5. 		return 1;
  6.     }
  7.     else{
  8. 		return n * n + rec(n - 1);
  9.     }
  10. }
  11. int main(void) {
  12. 	int n;
  13. 	for(n = 1;n < 5;n++){
  14.     	printf("1から%dまでの二乗和の値は%d\n", n, rec(n));
  15. 	}
  16. 	return 0;
  17. }
  18.  
  19.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1から1までの二乗和の値は1
1から2までの二乗和の値は5
1から3までの二乗和の値は14
1から4までの二乗和の値は30
https://ideone.com/bz3mEX
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!