ios eof() function in C++ with Examples

Last Updated : 21 Mar, 2023

The eof() method of ios class in C++ is used to check if the stream is has raised any EOF (End Of File) error. It means that this function will check if this stream has its eofbit set. Syntax:

bool eof() const;

Parameters: This method does not accept any parameter. Return Value: This method returns true if the stream has eofbit set, else false.

Time Complexity: O(1)

Auxiliary Space: O(1)

Example 1:

CPP

// C++ code to demonstrate
// the working of eof() function

#include <bits/stdc++.h>
using namespace std;

int main()
{

    // Stream
    stringstream ss;

    // Using eof() function
    bool isEOF = ss.eof();

    // print result
    cout << "is stream eof: "
        << isEOF << endl;

    return 0;
}

Output:

is stream eof: 0

Example 2:

CPP

// C++ code to demonstrate
// the working of eof() function

#include <bits/stdc++.h>
using namespace std;

int main()
{

    // Stream
    stringstream ss;
    ss.clear(ss.eofbit);

    // Using eof() function
    bool isEOF = ss.eof();

    // print result
    cout << "is stream eof: "
        << isEOF << endl;

    return 0;
}

Output:

is stream eof: 1

Reference: hhttp://www.cplusplus.com/reference/ios/ios/eof/

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