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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main(void) {
  5.   int ninzu[15];
  6.   int kuwake[10] = {0};
  7.   int i, rank;
  8.  
  9.   for (i = 0; i < 15; i++) {
  10.     ninzu[i] = rand() % 101;
  11.     if (ninzu[i] == 100) {
  12.       rank = 9;
  13.     } else {
  14.       rank = ninzu[i] / 10;
  15.     }
  16.     kuwake[rank]++;
  17.   }
  18.  
  19.   for (i = 0; i < 10; i++) {
  20.     int iki = i * 10;
  21.     printf("%3d：", iki);
  22.     for (int j = 0; j < kuwake[i]; j++) {
  23.       printf("*");
  24.     }
  25.     printf("\n");
  26.   }
  27.  
  28.   printf("\n15人分の点数\n");
  29.   for (i = 0; i < 15; i++) {
  30.     printf("%3d ", ninzu[i]);
  31.   }
  32.  
  33.   return 0;
  34. }
  35.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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  0：*
 10：**
 20：
 30：****
 40：**
 50：****
 60：*
 70：
 80：
 90：*

15人分の点数
 32  32  54  12  52  56   8  30  44  94  44  39  65  19  51
https://ideone.com/UG319e
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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