What is the decimal value of x in C language?

In C language, x does not have a specific base. Its base is determined by context or variable assignment: integer constant: without suffix, it is decimal; integer constant with suffix: 0 or 0x means hexadecimal. , 0b represents binary, 0o represents octal; uninitialized variable: the value is undefined; assigned: the base is indicated by the assigned value.

What is the base of x in C language?

In C language, x usually does not represent any specific base. Its value is determined by the assignment of x in context or program code.

x can be a value in any base, depending on:

• Integer constant: If x is an integer constant without any suffix, then It is interpreted as decimal (default).

• Suffixed integer constant: If x is followed by a suffix, it indicates the base of x. Suffixes include:

  • 0 or 0x: hexadecimal
  • 0b: binary
  • 0o: octal
• Variable: If x is an uninitialized variable, its value is undefined. If x is assigned a value in a specific base, its base will be the base indicated by the value.

Example:

<code class="c">int x = 10; // 十进制整数
int x = 0x10; // 十六进制整数
int x = 0b1111; // 二进制整数</code>

In the above example, x has different bases depending on its assigned value:

• x = 10: Decimal (default)
• x = 0x10: Hexadecimal
• x = 0b1111 :Binary

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