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  1. #include <stdio.h>
  2. // #include <string.h>
  3.  
  4. int main( void )
  5. {
  6.   // [2] 入力した文字列をASCIIコードに応じた2進数に変換するプログラムを作成せよ。
  7.   {
  8.     char *s = "abc", c;
  9.  
  10.     while (*s) {
  11.       c = *s;
  12.       for (int i = 0; i < 8; ++i) {
  13.         printf("%c", c % 2 ? '1' : '0');
  14.         c <<= 1;
  15.       }
  16.       ++s;
  17.     }
  18.     printf("\n");
  19.   }
  20.  
  21.   // また、2進数から文字列に戻す変換を行うプログラムも作成せよ。
  22.   {
  23.     char c, *bits = "011000010110001001100011"; // abc
  24.  
  25.     while ( *bits ) {
  26.       for (int i = 0; i < 8; ++i) {
  27.         c <<= 1;
  28.         c |= ( *bits++ == '1' );
  29.       }
  30.       printf("%c", c);
  31.     }
  32.     printf("\n");
  33.   }
  34.  
  35.   return 0;
  36. }
  37.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.c: In function ‘main’:
prog.c:12: error: ‘for’ loop initial declaration used outside C99 mode
prog.c:26: error: ‘for’ loop initial declaration used outside C99 mode
stdout
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Standard output is empty
https://ideone.com/ykmqgA
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

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