C Standard Library

C <math.h> - exp() Function



The C <math.h> exp() function returns e raised to the power of specified number, i.e., ex. Please note that e is the base of the natural system of logarithms, and its value is approximately 2.718282.

Syntax

double exp (double x);
float expf (float x);
long double expl (long double x);

Parameters

x Specify the exponent of e.

Return Value

Returns e raised to the power of specified number.

Example:

In the example below, exp() function is used to calculate e raised to the power of specified number.

#include <stdio.h>
#include <math.h>
 
int main (){
  printf("%lf\n", exp(2));
  printf("%lf\n", exp(-2));
  printf("%lf\n", exp(1.5));
  printf("%lf\n", exp(-1.5));  
  return 0;
}

The output of the above code will be:

7.389056
0.135335
4.481689
0.223130

❮ C <math.h> Library

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