What is the double type in programming?

The double type in programming is a floating point data type with high precision. This allows it to represent a wide range of decimal values and provides more precision than the float type. A double typically allocates 64 bits of memory, which enables it to store significant digits and represent numbers with many decimal places accurately, making it suitable for situations where precision is crucial, such as scientific calculations or financial applications.

In contrast, the other options incorrectly define the double type. While integers are typically represented using integer data types, the double type is specific to floating-point numbers. The concept of constant values does not pertain to the double type; instead, this relates to variables that cannot be changed after their initial assignment, known as constants. Lastly, the double type is not a data structure for handling strings; string data types usually manage sequences of characters, whereas doubles are focused on numerical value representation.