45 lines
1.0 KiB
C++
45 lines
1.0 KiB
C++
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//===----------------------------------------------------------------------===//
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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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// <strstream>
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// class istrstream
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// explicit istrstream(const char* s);
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#include <strstream>
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#include <cassert>
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#include <string>
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int main()
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{
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{
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const char buf[] = "123 4.5 dog";
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std::istrstream in(buf);
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int i;
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in >> i;
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assert(i == 123);
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double d;
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in >> d;
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assert(d == 4.5);
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std::string s;
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in >> s;
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assert(s == "dog");
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assert(in.eof());
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assert(!in.fail());
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in.clear();
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in.putback('g');
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assert(!in.fail());
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in.putback('g');
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assert(in.fail());
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assert(buf[9] == 'o');
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assert(buf[10] == 'g');
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}
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}
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