Absolute value function 

	1. Definition:

	The absolute value of a number gives its positive value. 
	It is defined as |x| = + x if x is positive and - x if x 
	is negative.


	2. Example in C language:

	/*
	Here is  the function to output the absolute value of
	any number .
	*/

	#include 

	int main()
	{
	float value;

	//Declaring the defined function absolute:
	float absolute(float value) ;

	printf("Enter a float ->  \n");
	scanf ("%f", &value);

	/*Displaying the entered value*/

	printf("The read value is: %6.2f\n", value);

	/* Displaying its absolute value */

	printf("Its absolute value is: %6.2f\n", absolute(value));

	return 0;
	}


	/*Defininig the function absolute*/

	float absolute ( float x )
	{
	if ( x < 0 )
	return      -x ;
	else
	return       x ;
	}