typedef int mytype;
//typedef unsigned int mytype;

bool isSigned(mytype x)
{
	//how to tell if mytype is a signed type or not?
}

#include <iostream>
using namespace std;

typedef          int mytypeSi;
typedef unsigned int mytypeUi;

void printmyTypeSi(mytypeSi x)
{
    cout << "In printmyTypeSi: x  = " << x << endl;
}
void printmyTypeUi(mytypeUi x)
{
    cout << "In printmyTypeUi: x  = " << x << endl;
}



int main()
{
    int       i = -1;
    unsigned ui = i;
    float    fi = -123.45;

    cout << "In main         : i  = " << i << endl;
    printmyTypeSi(i);
    printmyTypeUi(i);
    cout << endl;

    cout << "In main         : ui = " << ui << endl;
    printmyTypeSi(ui);
    printmyTypeUi(ui);
    cout << endl;

    cout << "In main         : fi = " << fi << endl;
    printmyTypeSi(fi);
    printmyTypeUi(fi);
    cout << endl;


    return 0;
}