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C Math exp() Function

❮ Math Functions


Example

Return e raised to the power of different numbers:

printf("%f", exp(0));
printf("%f", exp(1));
printf("%f", exp(10));
printf("%f", exp(4.8));
printf("%f", exp(2.718));
Try it Yourself »

Definition and Usage

The exp() function returns the result of e raised to the power of a number (ex).

The exp() function is defined in the <math.h> header file.

e is the base of the natural system of logarithms (approximately 2.718282). Some implementations of the <math.h> library include a constant M_E but it is not guaranteed to be available.


Syntax

One of the following:

exp(double number);

Parameter Values

Parameter Description
number Required. Specifies the power to which e is raised.

Technical Details

Returns: A double value representing the result of e to the power of a number.

❮ Math Functions


Related Pages

C Functions Tutorial

C Math Functions Tutorial


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