basic_istream::seekg() in C++ with Examples

The basic_stream::seekg() method is used to set position of the next character to be extracted from the input stream. This function is present in the iostream header file. Below is the syntax for the same:

Header File:

#include<iostream>

Syntax:

basic_istream& seekg (pos_type pos);

Parameter:

pos: It represents the new position in the buffer .

Return Value: This function returns the basic_istream object.

Below is the program to illustrate std::basic_istream::seekg()

Program 1:

// C++ code for basic_istream::seekg() 
  
#include <bits/stdc++.h> 
using namespace std; 
  
// Driver code 
int main() 
{ 
    string str = "Geeks for Geeks"; 
    istringstream gfg(str); 
    string a, b; 
  
    gfg >> a; 
    gfg.seekg(0); // rewind 
    gfg >> b; 
  
    cout << "a = " << a << endl; 
    cout << "b = " << b << endl; 
} 

Output:

a = Geeks
b = Geeks

Program 2:

// C++ code for basic_istream::seekg() 
  
#include <bits/stdc++.h> 
using namespace std; 
  
// Driver code 
int main() 
{ 
    string str = "Geeks for Geeks"; 
    istringstream gfg(str); 
    string a, b; 
  
    gfg >> a; 
    gfg.seekg(6); // rewind 
    gfg >> b; 
  
    cout << "a = " << a << endl; 
    cout << "b = " << b << endl; 
} 

Output:

a = Geeks
b = for

Reference: http://www.cplusplus.com/reference/istream/basic_istream/seekg/

Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready.

My Personal Notes

Recommended Posts:

bansal_rtk_

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.