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  1. #include <stdio.h>
  2.  
  3. #define NUM 10
  4.  
  5. int main()
  6. {
  7.     int a[NUM]; 
  8.     int i;
  9.  
  10.     a[0] = 3;
  11.  
  12.     for (i = 1; i < NUM; i++)
  13.     {
  14.         a[i] = a[i - 1] + 3;
  15.     }
  16.  
  17.     printf("数列の最初の10項目:\n");
  18.     for (i = 0; i < NUM; i++)
  19.     {
  20.         printf("a(%d) = %d\n", i + 1, a[i]);
  21.     }
  22.  
  23.     return 0;
  24. }
  25.  
Success #stdin #stdout 0.01s 5332KB
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stdin
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Standard input is empty
stdout
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数列の最初の10項目:
a(1) = 3
a(2) = 6
a(3) = 9
a(4) = 12
a(5) = 15
a(6) = 18
a(7) = 21
a(8) = 24
a(9) = 27
a(10) = 30
https://ideone.com/6hfv4v
language:
C (gcc 8.3)
created:
17 hours ago
visibility:
public

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