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  1. #include <stdio.h>
  2. int c;
  3. //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
  4. int sum(int n){
  5. 	if(n==1){
  6. 		return 1;
  7. 	}
  8. 	else{
  9. 		return c = c + sum(n-1);
  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 5284KB
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1から10までの和は256
https://ideone.com/Wq6L0M
language:
C (gcc 8.3)
created:
1 hour ago
visibility:
public

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