libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/ccp.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
  10
  11 // <strstream>
  12
  13 // class istrstream
  14
  15 // explicit istrstream(const char* s);
  16
  17 #include <strstream>
  18 #include <cassert>
  19 #include <string>
  20
  21 #include "test_macros.h"
  22
  23 int main(int, char**)
  24 {
  25     {
  26         const char buf[] = "123 4.5 dog";
  27         std::istrstream in(buf);
  28         int i;
  29         in >> i;
  30         assert(i == 123);
  31         double d;
  32         in >> d;
  33         assert(d == 4.5);
  34         std::string s;
  35         in >> s;
  36         assert(s == "dog");
  37         assert(in.eof());
  38         assert(!in.fail());
  39         in.clear();
  40         in.putback('g');
  41         assert(!in.fail());
  42         in.putback('g');
  43         assert(in.fail());
  44         assert(buf[9] == 'o');
  45         assert(buf[10] == 'g');
  46     }
  47
  48   return 0;
  49 }