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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.     int sum=0;
  5.     for(int i=1;i<=n;i++){
  6.         sum+=i;
  7.     }
  8.     return sum;
  9. }
  10. int main(void) {
  11. 	int b,n;
  12.     scanf("%d",&n);
  13.     b=sum(n);
  14.     printf("1から%dまでの和は%d", n,b);
  15. 	return 0;
  16. }
  17.  
Success #stdin #stdout 0.01s 5324KB
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stdin
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10
stdout
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1から10までの和は55
https://ideone.com/03B3cy
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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