68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <string>
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// template<class charT, class traits, class Allocator>
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// basic_istream<charT,traits>&
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// operator>>(basic_istream<charT,traits>& is,
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// basic_string<charT,traits,Allocator>& str);
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#include <string>
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#include <sstream>
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#include <cassert>
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int main()
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{
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{
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std::istringstream in("a bc defghij");
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std::string s("initial text");
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in >> s;
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assert(in.good());
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assert(s == "a");
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assert(in.peek() == ' ');
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in >> s;
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assert(in.good());
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assert(s == "bc");
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assert(in.peek() == ' ');
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in.width(3);
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in >> s;
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assert(in.good());
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assert(s == "def");
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assert(in.peek() == 'g');
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in >> s;
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assert(in.eof());
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assert(s == "ghij");
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in >> s;
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assert(in.fail());
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}
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{
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std::wistringstream in(L"a bc defghij");
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std::wstring s(L"initial text");
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in >> s;
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assert(in.good());
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assert(s == L"a");
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assert(in.peek() == L' ');
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in >> s;
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assert(in.good());
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assert(s == L"bc");
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assert(in.peek() == L' ');
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in.width(3);
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in >> s;
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assert(in.good());
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assert(s == L"def");
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assert(in.peek() == L'g');
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in >> s;
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assert(in.eof());
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assert(s == L"ghij");
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in >> s;
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assert(in.fail());
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}
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}
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