C library function exp() Usage and Example

C Standard Library <math.h>

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

C exp() Function Prototype

double exp(double arg);

exp(arg) accepts a parameter and returns a double type value .

[Math] ex = exp(x) [C Language]

It is<math.h> 　Defined in the header file.

To calculate the exp() of long double or float, you can use the following prototype

long double expl(long double arg);
float expf(float arg);

C exp() Parameter Range

The parameter of exp() can be any value, including negative or positive numbers.

Example: C exp() function

#include <stdio.h>
#include <math.h>
int main();
{
　　　　double x = ;　5;
　　　　printf("Power of e is %lf", x, exp(x));
　　　　printf("Power of e is %lf", x　+　1, exp(x　+　1));
　　　　printf("Power of e is %lf", x　+　2, exp(x　+　2));
　　　　return(0);
}

Output Result

e　5Power of　148.413159
e　6Power of　403.428793
e　7Power of　1096.633158

C Standard Library <math.h>