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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. 	return n*(n+1)/2;
  5. }
  6.  
  7. int main(void) {
  8. 	int a,b;
  9.     a = 10;
  10.     b = sum(a);
  11.  
  12.     printf("1から%dまでの和は%d", a,b );
  13. 	return 0;
  14. }
  15.  
Success #stdin #stdout 0s 5324KB
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10
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1から10までの和は55
https://ideone.com/j07be6
提出課題1
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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