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std::ios_base::seekdir(3) C++ Standard Libary std::ios_base::seekdir(3) NAME std::ios_base::seekdir - std::ios_base::seekdir Synopsis typedef /*implementation defined*/ seekdir; static constexpr seekdir beg = /*implementation defined*/ static constexpr seekdir end = /*implementation defined*/ static constexpr seekdir cur = /*implementation defined*/ Specifies file seeking direction type. The following constants are defined: Constant Explanation beg the beginning of a stream end the ending of a stream cur the current position of stream position indicator Example // Run this code #include <iostream> #include <string> #include <sstream> int main() { std::istringstream in("Hello, World!"); std::string word1, word2, word3, word4, word5; in >> word1; in.seekg(0, std::ios_base::beg); // <- rewind in >> word2; in.seekg(1, std::ios_base::cur); // -> seek from cur pos toward the end in >> word3; in.seekg(-6, std::ios_base::cur); // <- seek from cur pos (end) toward begin in >> word4; in.seekg(-6, std::ios_base::end); // <- seek from end toward begin in >> word5; std::cout << "word1 = " << word1 << '\n' << "word2 = " << word2 << '\n' << "word3 = " << word3 << '\n' << "word4 = " << word4 << '\n' << "word5 = " << word5 << '\n'; } Output: word1 = Hello, word2 = Hello, word3 = World! word4 = World! word5 = World! See also seekg sets the input position indicator (public member function of std::ba- sic_istream<CharT,Traits>) seekp sets the output position indicator (public member function of std::basic_os- tream<CharT,Traits>) pubseekoff invokes seekoff() (public member function of std::basic_stream- buf<CharT,Traits>) http://cppreference.com 2022.07.31 std::ios_base::seekdir(3)
NAME | Synopsis | Example | Output: | See also
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