C++ Math fabs() Functions

C++ Math fabs() Functions with tutorial for beginners and professionals with examples on isgreaterequal(), less(), islessequal(), islessgreater(), isunordered(), exp(), frexp(), ldexp(), log(), log10(), modf(), exp2(), expm1(), log1p(), log2(), logb(), scalbn(), scalbln() etc.

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C++ Math fabs()

It computes the absolute value of a given number.

Suppose a number is 'x':

fabs(x) = |x|;

Syntax

float fabs(float x);
double fabs(double x);
int fabs(int x);

Parameter

x: The value whose absolute value is to be determined.

Return value

It returns the absolute value of x.

Example 1

Let's see the simple example when the value of x is positive.

#include 
#include
using namespace std;
 int main()
{
float x=11.2;
 std::cout << "Value of x is :" <

Output:

Value of x is :11.2
Absolute value of x is : 11.2

In this example, fabs() function determines the absolute value of x=11.2.

Example 2

Let's see the simple example when the value of x is negative.

#include 
#include
using namespace std;
int main()
{
   float x=-9.4;
   std::cout << "Value of x is :" <

Output:

Value of x is :-9.4
Absolute value of x is : 9.4

In this example, fabs() function computes the absolute value of x when the value of x is equal to -9.4.

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