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  1. #include <stdio.h>
  2.  
  3. #define NUMBER 10
  4.  
  5. int main(void) {
  6.     int tensu[NUMBER];
  7.     int sum = 0;
  8.     int max, min;
  9.     double average, v = 0.0;
  10.  
  11.  
  12.     printf("%d人の点数を入力してください。\n", NUMBER);
  13.     for (int i = 0; i < NUMBER; i++) {
  14.         printf("%2d番: ", i + 1);
  15.         scanf("%d", &tensu[i]);
  16.         sum += tensu[i];
  17.     }
  18.  
  19.  
  20.     average = (double)sum / NUMBER;
  21.  
  22.  
  23.     max = min = tensu[0];
  24.  
  25.  
  26.     for (int i = 1; i < NUMBER; i++) {
  27.         if (tensu[i] > max) max = tensu[i];
  28.         if (tensu[i] < min) min = tensu[i];
  29.     }
  30.  
  31.  
  32.     for (int i = 0; i < NUMBER; i++) {
  33.         double diff = tensu[i] - average;
  34.         v += diff * diff;  // 2乗
  35.     }
  36.  
  37.  
  38.     printf("\n合計点数   : %5d\n", sum);
  39.     printf("平均点数   : %5.2f\n", average);
  40.     printf("最高点     : %5d\n", max);
  41.     printf("最低点     : %5d\n", min);
  42.     printf("分散       : %5.2f\n", v);  
  43.  
  44.     return 0;
  45. }
Success #stdin #stdout 0s 5320KB
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stdin
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1 2 3 4 5 6 7 8 9 10
stdout
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10人の点数を入力してください。
 1番:  2番:  3番:  4番:  5番:  6番:  7番:  8番:  9番: 10番: 
合計点数   :    55
平均点数   :  5.50
最高点     :    10
最低点     :     1
分散       : 82.50
https://ideone.com/MWdpaK
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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