The meaning of %x in c language

In C language, the %x format specifier is used to represent and process hexadecimal integers. It instructs the printf() or scanf() function to print or read the integer as a hexadecimal number respectively.

##%x in C language

In C language,

%x is a Format specifier used to represent hexadecimal integers. It instructs the printf() or scanf() function to print or read an integer as a hexadecimal number.

Usage:

The format specifier

%x is used as follows:

<code class="c">printf("十六进制数：%x\n", 整数变量);
scanf("%x", &整数变量);</code>

Instructions: The

• % characters indicate that this is a format specifier.
• x indicates that the integer should be printed or read as a hexadecimal number.
• Integer variable is the integer variable that will be printed or read.

Example:

<code class="c">int i = 255;

printf("十六进制数：%x\n", i); // 输出：ff</code>

Note:

Hexadecimal numbers are prefixed with 0x Beginning, for example 0xff.
• %xThe format specifier does not consider whether the integer is signed or unsigned.
If you want to print or read signed hexadecimal numbers, use the
• %d or %u format specifier.

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