util/limits1.cpp

The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference, 2nd Edition
by Nicolai M. Josuttis, Addison Wesley Longman, 2012
Copyright © 2012 by Pearson Education, Inc. and Nicolai M. Josuttis


#include <iostream>
#include <limits>
#include <string>
using namespace std;

int main()
{
   // use textual representation for bool
   cout << boolalpha;

   // print maximum of integral types
   cout << "max(short): " << numeric_limits<short>::max() << endl;
   cout << "max(int):   " << numeric_limits<int>::max() << endl;
   cout << "max(long):  " << numeric_limits<long>::max() << endl;
   cout << endl;

   // print maximum of floating-point types
   cout << "max(float):       "
        << numeric_limits<float>::max() << endl;
   cout << "max(double):      "
        << numeric_limits<double>::max() << endl;
   cout << "max(long double): "
        << numeric_limits<long double>::max() << endl;
   cout << endl;

   // print whether char is signed
   cout << "is_signed(char): "
        << numeric_limits<char>::is_signed << endl;
   cout << endl;

   // print whether numeric limits for type string exist
   cout << "is_specialized(string): "
        << numeric_limits<string>::is_specialized << endl;
}