Exponential() in C

Exponential in mathematics

It can be described as the function that computes the power of any constant. It can be represented as a^x where a is a constant value. Usually, the constant value is e.

Exponential in C Programming

In C programming, we compute the exponential value of the constant e., e stands for Euler's number. The value of e is approximately 2.71828. The exp() function is defined in maths.h header file. So, if the

Syntax of exp() function in C Programming

Parameter for exp() function

The function only requires one parameter. The parameter stores the value by which the e is to be raised. Since the value for which the exponent is to be computed is constant.

Return Type for exp() function

The return type for the exp() function is double. It can be float or any other data type that can hold the numerical value.

Implementing exp() function in C Program

Below is the code to implement the exp() function in C Program.

//Include the maths header file in the program.
#include <stdio.h>
#include <math.h>

int main()
{// Use the exp() function to compute the exponential value for e.
    printf("The value for e raised to power 0 is    = %.6f \n", exp(0));
    printf("The value for e raised to power 2 is      = %.6f \n", exp(2));
    printf("The value for e raised to power 13 is     = %.6f \n", exp(13));
    printf("The value for e raised to power 12.01 is     = %.6f \n", exp(12.01));
    printf("The value for e raised to power -1 is   = %.6f \n", exp(-1));
    printf("The value for e raised to power -3.73 is  = %.6f \n", exp(-3.73));
// Using .6f to print the result will return the answer up to 6th decimal place.
    return 0;
}

Output:

User Input for Computing the Exponential Value

//The C Program for raising the power of e by user input
//exp() is defined in math.h header file
#include <stdio.h>
#include <math.h>
int main()
{
float power, result;
printf(" Please input the value to raise e :  \n");
//take user input
scanf("%f", &power);
//Store answer
result = exp(power);
printf("\n The value for e raised to the power %.4f is = %.6f \n", power, result);
return 0;
}

Output:

In the above example, we have taken the input from the user. It can be any float value once the user enters the value. It will be used to compute the exponential in the program, and it will be stored in the variable result. In the last statement, we will print the result. The answer will be displayed up to the sixth decimal place.

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