How Can I Represent Binary Numbers in C or C ?

Using Binary Literals in C or C

When working with binary numbers in C or C , using literal numeric values can be convenient. However, the provided code snippet:

const char x = 00010000;

fails to compile due to syntax errors. To use binary literals in C or C , you have a few options:

GCC Extension and C 14 Standard

If using GCC, you can take advantage of a language extension that has been included in the C 14 standard. This extension allows you to use binary prefixes to specify binary literals:

int x = 0b00010000; // Using the 0b prefix for binary

Hexadecimal Literals

Another option is to use hexadecimal literals, which represent numbers in base 16. Since the provided binary number, 00010000, is equivalent to the hexadecimal value 0x10, you can write:

const int x = 0x10;

Decipher and Convert

Alternatively, you can decipher the individual bits of the binary number and convert them to a decimal value. For instance, the provided binary number can be converted to decimal as:

const int x = (0 << 7) | (0 << 6) | (0 << 5) | (1 << 4) | (0 << 3) | (0 << 2) | (0 << 1) | (0 << 0);

This method can be useful if you need to perform bitwise operations on the number.

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