Tutorial Gateway

C fabs Function

by

The C fabs function is one of the Math Function, used to return the absolute positive number of a given number or specified expression. In this article we will show you, How to write fabs function in C Programming language with example.

C fabs syntax

The basic syntax of the fabs in C Programming is as shown below.

double fabs(double number);

C fabs Function Example

The C math fabs Function allows you to return the absolute positive number. In this program, We are going to find the absolute positive number, and display the output.

/* FABS in C Programming Example */

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

int main()
{
    printf("\n The Absolute Value of 0       = %.4f ", fabs(0));
    printf("\n The Absolute Value of 1       = %.4f ", fabs(1));
    
    printf("\n The Absolute Value of 152     = %.4f ", fabs(152));
    printf("\n The Absolute Value of 400.36  = %.4f ", fabs(400.36));
    
    printf("\n The Absolute Value of -27.32  = %.4f ", fabs(-27.32));  
    printf("\n The Absolute Value of -90     = %.4f ", fabs(-90));
  
    return 0;
}

OUTPUT

C fabs Function 1

C fabs Example 2

In this example, we are allowing the user to enter their own value. Next, we used fabs function to find the absolute positive number.

//* FABS in C Programming Example */

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

int main()
{
    float number, absValue;

    printf(" Please Enter any Numeric Value :  ");
    scanf("%f", &number);
  
    absValue = fabs(number);
  
    printf("\n The Absolute Value of %.2f = %.4f ", number, absValue);
  
    return 0;
}

OUTPUT

C fabs Function 2