The meaning of double in c language

In C language, double is a data type used to represent double-precision floating point numbers. It has higher precision than the float type and is used to handle larger numerical ranges or more precise calculations. It can store high-precision numeric values, representing large floating-point numbers and decimals, ranging from -1.7976931348623157e308 to 1.7976931348623157e308, with a precision of approximately 15 significant digits and occupying 8 bytes in memory.

The meaning of double in C language

double is a data type in C language, used to represent Double precision floating point number. It is more precise than the float type and is used to represent a larger range of values ​​or more precise calculations.

Purpose:

• Storage values ​​that require high precision, such as scientific calculations, financial calculations or graphics processing.
• represents a large floating point number or a decimal number with a decimal part.
• Storing values ​​that require a wider range than the float type.

Range:

• Minimum value: -1.7976931348623157e308
• Maximum value: 1.7976931348623157e308
• Accuracy : About 15 significant digits

Memory occupation:

In most C language implementations, the double type occupies 8 bytes of memory space.

Syntax:

The syntax for declaring a double type variable is as follows:

<code class="c">double variable_name;</code>

For example:

<code class="c">double pi = 3.14159265358979323846;</code>

Compare with Float type:

• #The double type has higher precision than the float type.
• The double type occupies 8 bytes in memory, while the float type occupies 4 bytes.
• The double type is more suitable when performing high-precision calculations or storing large ranges of values.

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