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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. 		return n-1 + rec(n-3);
  6. 	}
  7.     if (n == 1){
  8.  
  9.         return 1;
  10.     }
  11.     else{
  12.         return n+rec(n-2);
  13.     }
  14. }
  15.  
  16. int main(void) {
  17.     int n = 12;
  18.     printf("%d以下の正の奇数の和は%d\n", n, rec(n));
  19. 	return 0;
  20. }
Success #stdin #stdout 0.01s 5276KB
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12以下の正の奇数の和は36
https://ideone.com/Al1ac1
language:
C (gcc 8.3)
created:
17 hours ago
visibility:
public

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