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C++ double Keyword

❮ C++ Keywords

Example

double myNum = 19.99;
cout << myNum;

Try it Yourself »

Definition and Usage

The double keyword is a data type that is usually 64 bits long which stores fractional numbers.

With 64 bits it can store positive and negative numbers with values between 1.7e−308 and 1.7e+308.

Related Pages

Read more about data types in our C++ Data Types Tutorial.

❮ C++ Keywords

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