What does 2.2f mean in C language?

2.2f is the format specifier representing floating point literals in C language, including: Width: 2 digits (left of the decimal point) Precision: 2 digits (right of the decimal point) Type: float

2.2f Meaning in C language

2.2f is the format specifier representing floating point literals in C language. It specifies the following:

• #2: Represents the number of digits to the left of the decimal point (width).
• .: decimal separator.
• 2: Indicates the number of digits to the right of the decimal point (precision).
• f: Indicates floating point type (float).

Thus, the 2.2f format specifier represents a floating-point literal with the following characteristics:

• Width: 2 digits (to the left of the decimal point )
• Precision: 2 digits (right of decimal point)
• Type: float

This means that when a floating point value is formatted using 2.2f, it will be represented in the following format:

<code>[小数点左边的两位数字].[小数点右边的两位数字]</code>

For example:

<code class="c">float value = 12.3456;
printf("值为：%2.2f\n", value);</code>

Output:

<code>值为：12.35</code>

because 2.2f formats value to have 2 digits of width and 2 digits of precision.

The above is the detailed content of What does 2.2f mean in C language?. For more information, please follow other related articles on the PHP Chinese website!