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  1. #include <stdio.h>
  2.  
  3. // 再帰を用いて1からnまでの二乗和を計算する関数
  4. int rec(int n){
  5. if (n == 1){
  6. return 1; 
  7. }
  8. else{
  9. return n * n + rec(n - 1); 
  10. }
  11. }
  12.  
  13. int main(void) {
  14. int n = 4;
  15. printf("1から%dまでの二乗和の値は%d\n", n, rec(n));
  16. return 0;
  17. }
  18.  
Success #stdin #stdout 0s 5320KB
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1から4までの二乗和の値は30
https://ideone.com/lLcRoS
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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