/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 vote135 views1 answer
Intlen in c++
C++
0 vote125 views1 answer
How to read qlistwidget in c++
C++
0 vote144 views1 answer
Inline in class in C++
C++
0 vote127 views1 answer
Infix to prefix using cpp linked list program
C++
0 vote137 views1 answer
C++ sort
C++
5 votes146 views1 answer
How to disable buttons in unity
C++
0 vote134 views1 answer
Find the max element along with it's index in c++
C++
15 votes136 views10 answers
Hello world
C++
1 vote162 views1 answer
C++ builder
C++
0 vote141 views1 answer
Int and char in c++ compiler
C++