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What is the size for double data type in c#

  1. 1 Byte

  2. 2 Byte

  3. 4 Byte

  4. 8 Byte

  5. 16 Byte
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D Correct answer
Explanation

In C#, the double data type is a 64-bit floating-point number, which occupies 8 bytes of memory. It follows the IEEE 754 standard for double-precision binary floating-point format. Float is 4 bytes (32-bit), while decimal is 16 bytes (128-bit).

AI explanation

In C#, the built-in 'double' type is a 64-bit (8-byte) IEEE 754 double-precision floating-point number, giving roughly 15-17 significant digits of precision. 1, 2, and 4 bytes correspond to smaller types (byte, short, and float/int respectively — float is 4 bytes, not double), and 16 bytes would be the size of 'decimal'. So 8 Byte is correct for double.

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