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  1. #include <stdio.h>
  2. //正の奇数nを引数とし，以下の正の奇数の和を求める関数
  3. int rec(int n){
  4. 	if(n%2==0){
  5. 		n--;
  6. 	}
  7.     if (n == 1){
  8.         return 1;
  9.     }
  10.     else{
  11.         return n+rec(n-2);
  12.     }
  13. }
  14. int main(void) {
  15.     int n = 11;
  16.     printf("%d以下の正の奇数の和は%d\n", n, rec(n));
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 5272KB
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11以下の正の奇数の和は36
https://ideone.com/kTsBco
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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