如何用Qt和C++向.bin文件写入二进制（非十六进制）内容？

Hey there! Let's break this down clearly, starting with fixing a key misunderstanding you might have:

First off: The .bin file you've already generated is already a pure binary file. The "1234 5678 0000 0016" you're seeing is just a hexadecimal human-readable representation of the underlying binary data.

To put it simply:

• Every byte in your .bin file is made of 8 bits (a mix of 0s and 1s) that computers can natively understand.
• Hexadecimal is just a condensed way for us humans to read those bits (1 hex character = 4 bits). So 12 in hex translates to 00010010 in binary—they're the same data, just displayed differently. Your initial thought that "hex vs binary formats are equivalent" is close, but more accurately: hex is a representation of binary data, not a separate format.

It sounds like you want a file that contains only the characters 0 and 1 (each bit written as a separate text character). That's totally feasible—but important note: this file will be a text file, not a traditional binary .bin file (since each 0/1 character takes up 1 full byte of storage, making the file 8x larger than your original .bin).

Here are two straightforward ways to do this, using your existing facts.bin (which holds the hex data 12 34 56 78 00 00 00 16):

Method 1: Python Script #

This is flexible and easy to tweak if you need adjustments:

# Read the binary content of your .bin file
with open('facts.bin', 'rb') as input_file:
    byte_content = input_file.read()

# Convert each byte to an 8-bit binary string, then join everything together
binary_text = ''.join(format(byte, '08b') for byte in byte_content)

# Write the pure 0/1 string to a text file
with open('binary_output.txt', 'w') as output_file:
    output_file.write(binary_text)

When you run this, binary_output.txt will contain:
0001001000110100010101100111100000000000000000000000000000010110

Method 2: Command Line Tools (xxd + awk) #

If you prefer using terminal commands, this one-liner works on most Unix-like systems (Linux, macOS, WSL):

xxd -b facts.bin | awk '{for(i=2;i<=NF;i++) printf "%s", $i}' > binary_output.txt

This uses xxd to convert the binary file to a binary bitstring, then awk strips out extra formatting and writes the pure 0/1 text to your output file.

• Your original facts.bin is already a binary file—hex is just how we read it, not what's stored.
• Generating a text file full of 0s and 1s is totally doable with the methods above.
• Just remember the difference between binary data (the raw bits computers use) and binary text (characters representing those bits).

内容的提问来源于stack exchange，提问作者Juliette Marquis