10How to express in c language

There are two ways to represent hexadecimal numbers in C language: prefix form (prefixed with 0x, followed by a hexadecimal number) and suffix form (add U after the hexadecimal number) suffix). Hexadecimal numbers use 0 to F (uppercase and lowercase letters represent the same value), the 0x prefix is ​​required in the prefix form, and the U suffix is ​​optional in the postfix form.

How to represent hexadecimal numbers in C language

In C language, you can use the following two There are three ways to represent hexadecimal numbers:

Method 1: The prefix form

• is prefixed with 0x, followed by hexadecimal System numbers.
• For example: 0x123 represents the hexadecimal number 291.

Method 2: Suffix form

• Add U suffix after the hexadecimal number.
• For example: 123U also represents the hexadecimal number 291.

Notes:

• Hexadecimal numbers use 0 to F (or 0 to f) to represent.
• Uppercase and lowercase letters represent the same hexadecimal value, for example 0xABC and 0xabc are the same.
• In the prefix form, the 0x prefix is ​​required, otherwise the number will be interpreted as a decimal number.
• In the suffix form, the U suffix is ​​optional but recommended to improve readability.

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