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extern/stdcxx/4.2.1/examples/manual/moneypunct.cpp

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+/**************************************************************************
+ *
+ * moneypunct.cpp - Example program for the moneypunct facet. 
+ *
+ * $Id: moneypunct.cpp 550991 2007-06-26 23:58:07Z sebor $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ * Copyright 1994-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+#include <climits>    // for CHAR_MAX
+#include <clocale>    // for lconv, localeconv()
+#include <iostream>   // for cout, endl
+#include <locale>     // for locale
+
+#include <examples.h>
+
+
+int main ()
+{
+    // Get a moneypunct facet from the classic "C" locale
+    const std::moneypunct<char, false> &mp =
+        std::use_facet<std::moneypunct<char, false> >(std::locale::classic ());
+
+    const std::lconv* const lc = std::localeconv ();
+    
+    // Expected output:
+    // Punctuator             C++   C99
+    // Decimal point        = '.'   "."
+    // Thousands separator  = ','   ""
+    // Currency symbol      = ""    ""
+    // Negative Sign        = ""    ""
+    // Positive Sign        = ""    ""
+    // Digits after decimal = 0    CHAR_MAX
+
+    std::cout << "Punctuator             C++   C99\n";
+
+    std::cout << "Decimal point        = '"
+              << mp.decimal_point () << "'   \""
+              << lc->decimal_point << '"';
+
+    std::cout << "\nThousands separator  = '"
+              << mp.thousands_sep () << "'   \""
+              << lc->thousands_sep << '"';
+
+    std::cout << "\nCurrency symbol      = \""
+              << mp.curr_symbol () << "\"    \""
+              << lc->currency_symbol << '"';
+
+    std::cout << "\nNegative Sign        = \""
+              << mp.negative_sign () << "\"    \""
+              << lc->negative_sign << '"';
+
+    std::cout << "\nPositive Sign        = \""
+              << mp.positive_sign () << "\"    \""
+              << lc->positive_sign << '"';
+
+    std::cout << "\nDigits after decimal = "
+              << mp.frac_digits () << "    ";
+
+    // since the value of CHAR_MAX depends on the signedness of char,
+    // if lc->frac_digits equals CHAR_MAX print the string "CHAR_MAX"
+    // to maintain the same output across all architectures, otherwise
+    // print the actual value
+
+    if (CHAR_MAX == lc->frac_digits)
+        std::cout << "CHAR_MAX";
+    else {
+        // this block should not be entered in a conforming environment
+        // since, according to 7.11, p2 of C99, frac_digits is required
+        // to be equal to CHAR_MAX in the "C" locale
+
+        // cast lconv::frac_digits from char to int to print out
+        // the numeric value of the member
+        std::cout << int (lc->frac_digits)
+                  << " (libc bug: expected CHAR_MAX, i.e., "
+                  << unsigned ((unsigned char)CHAR_MAX)
+                  << ")";
+    }
+
+    std::cout << std::endl;
+
+    return 0;
+}