static_cast usage

static_cast is used to explicitly convert types, including data types, pointer types, constant types, and base class/derived class conversions, to improve code readability and avoid unexpected errors in implicit conversions.

static_cast usage

Answer the question:

static_cast is used for Explicitly convert expressions of different types.

Detailed expansion:

static_cast is a type conversion operator in C language, used to convert between expressions of different types. Its syntax is as follows:

<code>static_cast<new_type>(expression)</new_type></code>

Among them, new_type is the target type, and expression is the expression that needs to be converted.

Usage:

static_cast can be used for the following types of conversion:

• Data type conversion: Conversion of one data type to another, such as from int to float.
• Pointer type conversion: Convert one pointer type to another pointer type, such as converting from int to float.
• Constant type conversion: Convert one constant type to another constant type, such as converting from const int to int.
• Base class and derived class conversion: Convert between base class and derived class.

Advantages:

• Explicit conversion, the compiler knows the intention of the conversion.
• Improve the readability and maintainability of the code.
• Avoid unexpected errors that may be caused by implicit conversion.

Note:

• static_cast is an explicit conversion. If the target type is incompatible with the source type, a compilation error will occur.
• Conversions may result in loss of precision or other data loss, so careful consideration is required.
• static_cast does nothing if the target type is the same as the source type.

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