What is the use of seekg?
What is the use of seekg?
In the C++ programming language, seekg is a function in the fstream library (part of the standard library) that allows you to seek to an arbitrary position in a file.
What is the use of seekg and Tellg?
seekg() is used to move the get pointer to a desired location with respect to a reference point. tellg() is used to know where the get pointer is in a file. seekp() is used to move the put pointer to a desired location with respect to a reference point. tellp() is used to know where the put pointer is in a file.
What is ios beg?
Three direction used for offset values are: ios_base::beg = from the beginning of the stream’s buffer. ios_base::cur = from the current position in the stream’s buffer. ios_base::end = from the end of the stream’s buffer. Required steps and operations Begin Open a data file for input/output operations.
What is Seekp?
The seekp(pos) method of ostream in C++ is used to set the position of the pointer in the output sequence with the specified position. This method takes the new position to be set and returns this ostream instance with the position set to the specified new position.
What is the use of Tellg () and Tellp () in file handling?
It returns the position of the current character in the output stream. It returns the position of the current character in the input stream. tellp() gives the position of the put pointer. tellg() gives the position of the get pointer.
What is Streampos?
typedef fpos streampos; Stream position type. Instantiation of fpos used to represent positions in narrow-oriented streams.
What is Seekp in C Plus Plus?
What is the difference between sequential and random file access?
Sequential Access to a data file means that the computer system reads or writes information to the file sequentially, starting from the beginning of the file and proceeding step by step. On the other hand, Random Access to a file means that the computer system can read or write information anywhere in the data file.
What does seekg do in C++?
In this example, seekg is used to move the position to the end of the file, and then back to the beginning. Modifies the stream object. Concurrent access to the same stream object may cause data races.
How do I clear the end of a file in seekg?
If we previously get an end of file on the stream, seekg will not reset it but will return an error in many implementations. – use the clear () method to clear the end of file bit first. This is a relatively common mistake and if seekg () is not performing as expected.
What is the use of gettellg () and seekp () functions?
tellg (), seekg () and seekp () functions are used to set/get the position of get and put pointers in a file while reading and writing. pos – represents the new absolute position within the stream (from the beginning). off – represents the offset to seek. ios_base::beg / ios::beg – beginning of the stream.