/C++/Read large files part by part in C++

Read large files part by part in C++

// Buffer size 1 Megabyte (or any number you like)
size_t buffer_size = 1<<20;
char *buffer = new char[buffer_size];

std::ifstream fin("input.dat");

while (fin)
{
    // Try to read next chunk of data
    fin.read(buffer, buffer_size);
    // Get the number of bytes actually read
    size_t count = fin.gcount();
    // If nothing has been read, break
    if (!count) 
        break;
    // Do whatever you need with first count bytes in the buffer
    // ...
}

delete[] buffer;

Source: stackoverflow.com

Similar codes

0 vote278 views1 answer
C++ get string between two characters
C++
1 vote277 views1 answer
Delete a head node in link list
C++
1 vote288 views1 answer
Differency between c++ std and stl
C++
0 vote278 views1 answer
What is g++ and gcc
C++
0 vote334 views1 answer
C++ first index 0 or 1
C++
0 vote295 views1 answer
Restart the computer in c++ after the default time (30) seconds. (Windows)
C++
3 votes299 views1 answer
Create a dictionary cpp
C++
0 vote283 views1 answer
Is variable sized array are not allowed in c++?
C++
0 vote301 views1 answer
C++ typeid get type name
C++
2 votes295 views2 answers
Copy array c++
C++