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fabs() function with example in C++

C++ fabs() function: Here, we are going to learn about the fabs() function with example of cmath header in C++ programming language.
Submitted by IncludeHelp, on April 26, 2019

C++ fabs() function

fabs() function is a library function of cmath header, it is used to find the absolute value of the given number, it accepts a number and returns absolute value.

Note: abs() function of cmath header can also be used for the same purpose.

Syntax

Syntax of fabs() function:

fabs(x);

Parameter(s)

x – is the number whose absolute value is returned.

Return value

double – it returns double value that is the absolute value of x.

Sample Input and Output

Input:
float x = -1012.232;

Function call:
fabs(x);

Output:
1012.232

Example

// C++ code to demonstrate the example of // fabs() function #include <iostream> #include <cmath> using namespace std; // main() section int main() { float x; float result; x = -10; cout<<"fabs("<<x<<"): "<<fabs(x)<<endl; x = -1012.232; cout<<"fabs("<<x<<"): "<<fabs(x)<<endl; x = 1012.232; cout<<"fabs("<<x<<"): "<<fabs(x)<<endl; x = -.908; cout<<"fabs("<<x<<"): "<<fabs(x)<<endl; return 0; }

Output

fabs(-10): 10
fabs(-1012.23): 1012.23
fabs(1012.23): 1012.23
fabs(-0.908): 0.908
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