What is the difference between seekg and Seekp?
seekg moves the file input pointer(position of reading frm file) while seekp moves file output pointer( position f writing to file). Another question from juice answerable simply by reading the documentation.
What is the significance of seekg and Seekp function?
Whereasseekp() function is used to move/sets the put pointer at the particular/desired location to putting the data into a file (External file). And If seekp() function is used to move the put pointer at the particular/desired location.
What are the arguments for seekg ()?
seekg() is a function in the iostream library that allows you to seek an arbitrary position in a file. It is included in the header file and is defined for istream class. It is used in file handling to sets the position of the next character to be extracted from the input stream from a given file.
Is ifstream an istream?
ifstream is an input file stream. It is a special kind of an istream that reads in data from a data file.
What is the difference between Tellg () and Tellp () functions?
tellp() gives the position of the put pointer. tellg() gives the position of the get pointer.
What is seekg () Seekp () function in C++?
C++ tellg(), seekg() and seekp() Example tellg(), seekg() and seekp() functions are used to set/get the position of get and put pointers in a file while reading and writing.
What is Random Access explain role of seekg and Seekp in random access?
Random file access with seekg() and seekp() Rather than reading all of the records until you get to the one you want, you can skip directly to the record you wish to retrieve. Random file access is done by manipulating the file pointer using either seekg() function (for input) and seekp() function (for output).
What is the use of seekg and Tellg in C++?
tellg(), seekg() and seekp() functions are used to set/get the position of get and put pointers in a file while reading and writing.
What does seekg () do Mcq?
Explanation: The member function seekg is used to position back from the end of file object.
What is the difference between Ostream and istream?
The istream class has methods for detecting input errors and the end of input data. The ostream class has methods for formatting output, i.e. specifying scientific notation, fixed decimal notation, or a combination thereof, and for specifying the number of decimal digits displayed.
What is use of Tellg function?
The tellg() function is used with input streams, and returns the current “get” position of the pointer in the stream. It has no parameters and returns a value of the member type pos_type, which is an integer data type representing the current position of the get stream pointer.
Can seekg () seek away from the end of a stream?
Until C++11, seekg () could not seek away from the end of stream (note: yours actually does, since the output is Current pos: 0, but that’s not exactly conformant: it should either fail to seek or it should clear the eofbit and seek). Either way, to work around that, you can execute ifs.clear (); before ifs.seekg (pos);
What is streamoff in iOS?
streamoff is an offset type (generally, a signed integral type). Object of type ios_base::seekdir. It may take any of the following constant values: offset is relative to… The istream object ( *this ).
Is seekg () relative to the current position?
Did you mean to use std::ios_base::cur? No. seekg () will be relative to the start, current position, or the end depending on the whence parameter being std::ios_base::beg, std::ios_base::cur, or std::ios_base::end. No. You can go backward using a negative offset.
How to move a single file position in a basic_fstream?
What this means is that when you use a std::basic_fstream, which by default uses a std::basic_filebuf, the single file position is moved by both seekp () and seekg (); unless you use a separate variable to store one of the positions so you can then seek back to it, you cannot keep track of put and get positions independently.