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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. 	int x=n;
  6. 	while(n-->0)
  7. 	x+=n;
  8. 	return x;
  9.  
  10.  
  11.  
  12. }
  13.  
  14. int main(void) {
  15. 	int a,b;
  16.     a = 10;
  17.     b = sum(a);
  18.     printf("1から%dまでの和は%d", a,b );
  19. 	return 0;
  20. }
  21.  
Success #stdin #stdout 0s 5276KB
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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/TVvinp
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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