#include <iostream>using namespace std;double Abs(double Nbr){//	return (Nbr >= 0) ? Nbr : -Nbr;	if( Nbr >= 0 )		return Nbr;	else		return -Nbr;}int main(){	double Number = -88;	double Nbr    = Abs(Number);	cout << "The absolute value of " << Number << " is " << Nbr << endl;	return 0;}

Here is an example of running the program:

The absolute value of -88 is 88