Abs (), fabs () and LABS ()

abs ()

Syntax:

#include
int abs( int num ); //parameter type is int typep>

Function: The function returns the absolute value of the parameter num.For example:

int magic_number = 10;cout << "Enter a guess: ";cin >> x;cout << "Your guess was " << abs( magic_number - x ) << " away from the magic number." << endl;

labs ()

Syntax:

#include
long labs( long num );//The parameter type is long long

Function: The function returns the absolute value of the parameter num.

fabs ()

Syntax:

#include
double fabs( double arg );//The parameter type is double

Function: The function returns the absolute value of the parameter arg.

Mainly to find the absolute value of the higher precision double or float type

The above three functions can share a header file