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  1. #include <stdio.h>
  2. int main(void){
  3.     int x=0,i,n;
  4.     double y=0;
  5.  
  6.     scanf("%d",&n);
  7.     printf("1から%dまでの数を計算する。\n",n);
  8.  
  9.     for(i=1;i<=n;i++){
  10.         x=x+i;
  11.     }
  12.  
  13.     y=(double)x/(double)n;
  14.  
  15.     printf("総和=%d\n",x);
  16.     printf("平均値=%.1f",y);
  17.     return 0;
  18. }
  19.  
  20.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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82
stdout
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1から82までの数を計算する。
総和=3403
平均値=41.5
https://ideone.com/vsqhLP
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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