C library function - exp()

Description

The C library function double exp(double x) returns the value of e raised to the xth power.

Declaration

Following is the declaration for exp() function.

double exp(double x)

Parameters

• x -- This is the floating point value.

Return Value

This function returns the exponential value of x.

Example

The following example shows the usage of exp() function.

#include <stdio.h>
#include <math.h>

int main ()
{
   double x = 0;
  
   printf("The exponential value of %lf is %lf\n", x, exp(x));
   printf("The exponential value of %lf is %lf\n", x+1, exp(x+1));
   printf("The exponential value of %lf is %lf\n", x+2, exp(x+2));
   
   return(0);
}

Let us compile and run the above program, this will produce the following result:

The exponential value of 0.000000 is 1.000000
The exponential value of 1.000000 is 2.718282
The exponential value of 2.000000 is 7.389056