C++14\u3067\u306f2\u9032\u6570\u30ea\u30c6\u30e9\u30eb\u304c\u898f\u683c\u306b\u52a0\u308f\u308a\u307e\u3057\u305f\u3002GCC\u3084Clang\u3067\u306fC\u3067\u3082\u4f7f\u3048\u307e\u3059\u3002\u3068\u3044\u3046\u304b\u3001\u3082\u3068\u3082\u3068\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u72ec\u81ea\u62e1\u5f35\u6a5f\u80fd\u3068\u3057\u3066\u5b9f\u88c5\u6e08\u307f\u3060\u3063\u305f\u3082\u306e\u304c\u898f\u683c\u306b\u306a\u3063\u305f\u307f\u305f\u3044\u3067\u3059\u3002\u4f7f\u3044\u65b9\u306f\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n
\r\n#include <stdio.h>\r\n\r\nint main()\r\n{\r\n char c = 0b01000001;\r\n\r\n printf("0x%X\\n", c);\r\n printf("%c\\n", c);\r\n\r\n return 0;\r\n}\r\n<\/pre>\n\r\n$ .\/a.out\r\n0x41\r\nA\r\n<\/pre>\n<\/p>\n
\u3093\u30fc\u3002\u3053\u308c\u3001\u306a\u306b\u304c\u3046\u308c\u3057\u3044\u3093\u3060\u308d\u3046\u3002\u3042\u3093\u307e\u308a\u4f7f\u3044\u3069\u3053\u308d\u304c\u601d\u3044\u3064\u304d\u307e\u305b\u3093\u3002\u305d\u308c\u304b\u3089\u3001printf(3)\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b2\u9032\u6570\u304c\u8ffd\u52a0\u3055\u308c\u305f\u308f\u3051\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u8868\u793a\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u8868\u793a\u3057\u305f\u3044\u3068\u304d\u306f\u3053\u3093\u306a\u3075\u3046\u306b\u30d3\u30c3\u30c8\u30de\u30b9\u30af\u3092\u30b7\u30d5\u30c8\u3057\u306a\u304c\u30890\u30681\u3092\u51fa\u529b\u3057\u3066\u3044\u3051\u3070\u3067\u304d\u307e\u3059\u3002<\/p>\n
\r\n#include <stdio.h>\r\n\r\nint bin_dump(const void *buf, size_t len)\r\n{\r\n size_t i;\r\n const unsigned char *ptr = buf;\r\n unsigned char bit_mask;\r\n\r\n for (i = 0; i < len; i++)\r\n for (bit_mask = 0x80; bit_mask; bit_mask = bit_mask >> 1)\r\n if (putchar(ptr[i] & bit_mask ? '1' : '0') == EOF)\r\n return -1;\r\n\r\n return 0;\r\n}\r\n\r\nint main()\r\n{\r\n char c = 0x41;\r\n int i = -1431655766;\r\n\r\n printf("0b");\r\n bin_dump(&c, sizeof(c));\r\n printf("\\n");\r\n\r\n printf("0b");\r\n bin_dump(&i, sizeof(i));\r\n printf("\\n");\r\n\r\n return 0;\r\n}\r\n<\/pre>\n\u5b9f\u884c\u3059\u308b\u3068\u3053\u3093\u306a\u7d50\u679c\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n
\r\n$ .\/a.out \r\n0b01000001\r\n0b10101010101010101010101010101010\r\n<\/pre>\n32bits\u306e2\u9032\u6570\u8868\u793a\u3001\u9577\u3059\u304e\u3066\u4f7f\u3046\u6c17\u3057\u306a\u3044\u3067\u3059\u306d\u300264bits\u3067\u306f\u3069\u3046\u306a\u308b\u306e\u304b\u8208\u5473\u304c\u3042\u308b\u65b9\u306f\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u30de\u30eb\u30c1\u30d0\u30a4\u30c8\u578b\u306e\u5834\u5408\u306f\u3001\u8aad\u3080\u3068\u304d\u306b\u30d0\u30a4\u30c8\u30aa\u30fc\u30c0\u30fc\u3092\u6c17\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305b\u3063\u304b\u304f\u306a\u306e\u3067\u30012\u9032\u6570\u30c0\u30f3\u30d7\u3060\u3051\u3067\u306a\u304f16\u9032\u6570\u30c0\u30f3\u30d7\u3059\u308b\u95a2\u6570\u3082\u4f5c\u308a\u307e\u3057\u305f\u3002<\/p>\n
\r\n#include <stdio.h>\r\n\r\nstatic int __dump_buf(const void *buf, size_t len,\r\n int (*dump_char)(unsigned char),\r\n int bytes_per_line)\r\n{\r\n size_t i;\r\n const unsigned char *ptr = buf;\r\n\r\n for (i = 0; i < len; i++) {\r\n if (!(i % bytes_per_line))\r\n if (printf("0x%04zx: ", i) < 0)\r\n return -1;\r\n\r\n if (dump_char(ptr[i]) == -1)\r\n return -1;\r\n\r\n if (putchar((i + 1) % bytes_per_line &&\r\n i + 1 < len ? ' ' : '\\n') == EOF)\r\n return -1;\r\n }\r\n\r\n return 0;\r\n}\r\n\r\nint hex_dump_char(unsigned char c)\r\n{\r\n if (printf("%02x", chr) < 0)\r\n return -1;\r\n\r\n return 0;\r\n}\r\n\r\nint bin_dump_char(unsigned char c)\r\n{\r\n unsigned char bit_mask;\r\n\r\n for (bit_mask = 0x80; bit_mask; bit_mask = bit_mask >> 1)\r\n if (putchar(c & bit_mask ? '1' :'0') == EOF)\r\n return -1;\r\n\r\n return 0;\r\n}\r\n\r\nint hex_dump(const void *buf, size_t len)\r\n{\r\n return __dump_buf(buf, len, hex_dump_char, 16);\r\n}\r\n\r\nint bin_dump(const void *buf, size_t len)\r\n{\r\n return __dump_buf(buf, len, bin_dump_char, 8);\r\n}\r\n\r\nint main()\r\n{\r\n size_t i;\r\n char buf[32];\r\n\r\n for (i = 0; i < sizeof(buf); i++)\r\n buf[i] = i;\r\n\r\n if (hex_dump(buf, sizeof(buf)) == -1)\r\n return 1;\r\n\r\n if (bin_dump(buf, sizeof(buf)) == -1)\r\n return 1;\r\n\r\n return 0;\r\n}\r\n<\/pre>\n\u9577\u3055len\u306e\u30d0\u30c3\u30d5\u30a1buf\u306b\u683c\u7d0d\u3055\u308c\u305f\u30e1\u30e2\u30ea\u306e16\u9032\u6570\u30c0\u30f3\u30d7\u30012\u9032\u6570\u30c0\u30f3\u30d7\u3092\u6a19\u6e96\u51fa\u529b\u306b\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002\u6210\u529f\u3059\u308b\u30680\u3001\u5931\u6557\u3059\u308b\u3068-1\u3092\u8fd4\u3057\u307e\u3059\u3002\u306a\u306b\u304b\u306e\u304a\u5f79\u306b\u7acb\u3064\u306a\u3089\u3069\u3046\u305e\u3054\u81ea\u7531\u306b\u3002<\/p>\n
\r\nexturn int hex_dump(const void *buf, size_t len);\r\nexturn int bin_dump(const void *buf, size_t len);\r\n<\/pre>\n\/* LICENSE: BSD 2-Clause *\/<\/p>\n