C++ Math abs() Functions

C++ Math abs() 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 abs()

The function finds the absolute value of a given number.

Suppose a number is 'x':

abs(x) = |x|;

Difference between abs() and fabs()

The abs() function does not support float or double type arguments while fabs() function supports float, double as well as integer type arguments.

Syntax

int abs( int x);
long int abs(long int x );
 long long int abs(long long 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 negative.

#include 
#include
using namespace std;
int main()
{
    int x= -9;
    std::cout << "Value of x is :" <

Output:

Value of x is :-9
Absolute value of x is : 9

In this example, abs() function computes the absolute value of x and returns the value 9.

Example 2

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

#include 
#include
using namespace std;
int main()
{
   int x= 89;
  std::cout << "Value of x is :" <

Output:

Value of x is :89
Absolute value of x is : 89

In this example, abs() function computes the absolute value of x.

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