std::basic_istream::tellg
From cppreference.com
< cpp | io | basic istream
| pos_type tellg(); |
||
Returns input position indicator of the current associated streambuf object.
First, constructs a std::basic_istream::sentry object with noskipws set to true. Afterwards, if fail()==true, returns pos_type(-1). Otherwise, returns rdbuf()->pubseekoff(0, std::ios_base::cur, std::ios_base::in).
Contents |
[edit] Parameters
(none)
[edit] Return value
current position of the get pointer on success, pos_type(-1) on failure
[edit] Example
#include <iostream> #include <string> #include <sstream> int main() { std::string str = "Hello, world"; std::istringstream in(str); std::string word; in >> word; std::cout << "After reading the word \"" << word << "\" tellg() returns " << in.tellg() << '\n'; }
Output:
After reading the word "Hello," tellg() returns 6
[edit] See also
| sets the input position indicator (public member function) | |
| returns the output position indicator (public member function of std::basic_ostream) | |
| sets the output position indicator (public member function of std::basic_ostream) | |
