exp in c

What is exp in c programming?

exp function calculates exponential value of a given number.

It is defined in math.h header file.

Prototype

double exp(double m);

Parameters

exp function takes double type value as input parameter.

Return values

exp function returns exponential value of a given number.

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Example program for exp in c

#include<stdio.h>
#include<math.h>
int main()
{
 double a=2.0;
 printf("The exponential value is %lf \n",exp(a));
 return 0;
} 

While using gcc use below command to add math header.

gcc file_name.c -lm

Code explanation

exp function is called by passing the input value. The exponential value is printed onto the console.

exp() Man page

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Difference between exp and pow in c

exp function is used to calculate the exponential value of a given number. pow is used to calculate the power of a number raised to the base value.

exp function takes one parameter. pow function takes two parameters.

Prototypes are as follows

double exp(double value1);

double pow(double value1,double value2);

exp in c	pow in c
Used to calculate exponential value of a given number.	Used to calculate power of a number raised to the base value.
double exp(double value1);	double pow(double value1,double value2);

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Difference between exp and sqrt in c

exp function is used to calculate the exponential value of a given number. sqrt function is used to calculate the square root of a given number.

Prototypes are as follows

double exp(double value1);

double sqrt(double value1);

exp in c	sqrt in c
Used to calculate exponential value of a given number.	Used to calculate square root of a given number.
double exp(double value1);	double sqrt(double value1);

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