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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int data[10];
  5.     int i, count = 0;
  6.  
  7.     data[0] = 1;
  8.     data[1] = 2;
  9.  
  10.     for (i = 2; i < 10; i++)
  11.     {
  12.         data[i] = 3 * data[i - 1] + 2 * data[i - 2];
  13.     }
  14.  
  15.     for (i = 0; i < 10; i++)
  16.     {
  17.         if (data[i] >= 100 && data[i] <= 10000)
  18.         {
  19.             count++;
  20.         }
  21.     }
  22.  
  23.     printf("100以上10000以下の個数は%d個です。\n", count);
  24. 	return 0;
  25. }
  26.  
Success #stdin #stdout 0s 5316KB
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Standard input is empty
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100以上10000以下の個数は4個です。
https://ideone.com/7K31B7
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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