Demo of typedef for functions

typedef_function.cpp

#include <iostream>
#include <string>

using namespace std;

typedef short SmallNumber;
typedef unsigned int Positive;
typedef double Double;

typedef double (*Add)(double value1, double value2);

double Addition(double x, double y)
{
    double result = x + y;
    return result;
}

int main()
{
    SmallNumber temperature = -248;
    Positive height = 1048;
    Double distance = new double(390.82);

    Add plus;
	
    plus = Addition;
	
    cout << "3855.06 + 74.88 = " << plus(3855.06, 74.88) << endl;
    
    return 0;
}