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  1. #include <stdio.h>
  2.  
  3. int sumodd(int n){
  4.  
  5. 	if(n <= 0){
  6. 		return 0;
  7. 	}else if(n % 2 == 1){
  8. 		return n + sumodd(n-2);
  9. 	}else{
  10. 		return sumodd(n-1);
  11. 	}
  12. }
  13.  
  14. int main(void) {
  15. 	int n;
  16. 	scanf("%d",&n);
  17.  
  18. 	printf("%d",sumodd(n));
  19.  
  20. 	return 0;
  21. }
  22.  
Success #stdin #stdout 0.01s 5316KB
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stdin
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6
stdout
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9
https://ideone.com/lrrcQG
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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