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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.  
  4. int main(void) {
  5. 	int a,n,sum;
  6. 	scanf("%d",&n);
  7.     a=1;
  8.     while(a<=n){
  9.     sum=n+a;
  10.     a++;
  11.     }
  12.     printf("1から%dまでの和は%d", n,sum);
  13. 	return 0;
  14. }
  15.  
Success #stdin #stdout 0s 5320KB
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stdin
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10
stdout
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1から10までの和は20
https://ideone.com/GHGNrt
language:
C (gcc 8.3)
created:
7 hours ago
visibility:
public

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