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  1. #include <stdio.h>
  2. //課題B-1: 1からnまでの和を求めるコードを完成させてください
  3. int sum(int n){
  4.  
  5. 	if(n==0){
  6. 		return 0;
  7. 	}
  8. 	return n+sum(n-1);
  9. }
  10.  
  11.  
  12.  
  13. int main(void) {
  14. 	int a,b;
  15.     a = 10;
  16.     b = sum(a);
  17.     printf("1から%dまでの和は%d", a,b );
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout 0s 5304KB
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Standard input is empty
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1から10までの和は55
https://ideone.com/FSomHA
language:
C (gcc 8.3)
created:
6 hours ago
visibility:
public

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