how to find absolute value in c 2b 2b

1#include <iostream>
2#include <cstdlib>
3using namespace std;
4
5int main()
6{
7	int x = -5;
8	long y = -2371041;
9
10	int a = abs(x);
11	long b = abs(y);
12
13	cout << "abs(" << x << ") = |" << x << "| = " << a << endl;
14	cout << "abs(" << y << ") = |" << y << "| = " << b << endl;
15}
16
17/* output
18abs(-5) = |-5| = 5
19abs(-2371041) = |-2371041| = 2371041*/

1[Mathematics] |x| = abs(x) [C++ Programming]