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  1. /*
  2.     http://t...content-available-to-author-only...h.net/test/read.cgi/tech/1359210850/809
  3.     [ プログラム ] スレ立てるまでもない質問はここで 124匹目
  4.         809 名前：デフォルトの名無しさん [sage]： 2013/02/19(火) 11:34:36.66   
  5.         a-zA-Z0-9の範囲の文字列で3桁の数字を全パターン出力するコード
  6.         言語は問いません 
  7.  */
  8. #include <stdio.h>
  9.  
  10. #define BASE  (26 + 26 + 10)
  11.  
  12. int main()
  13. {
  14.     char moji[BASE], *p, pr[4];
  15.     char ch;
  16.     int i, j, d;
  17.  
  18.     // init
  19.     p = moji;
  20.     for (ch = 'a'; ch <= 'z'; ch++)
  21.         *p++ = ch;
  22.     for (ch = 'A'; ch <= 'Z'; ch++)
  23.         *p++ = ch;
  24.     for (ch = '0'; ch <= '9'; ch++)
  25.         *p++ = ch;
  26.  
  27.     // printf
  28.     pr[3] = '\0';
  29.     for (i = 0; i < BASE * BASE * BASE; i++) {
  30.         d = i;
  31.         p = &pr[2];
  32.         for (j = 0; j < 3; j++) {
  33.             *p-- = moji[d % BASE];
  34.             d /= BASE;
  35.         }
  36.         printf("%s\n", pr);
  37.     }
  38.  
  39.     // end
  40.     return 0;
  41. }
  42.  
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https://ideone.com/Vuxo3B
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

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