Does read and write in fstream has buffer internally?

[lays]

I'm trying to write a code copying contents of one file into another. Here's my code.

char temp;

ofstream fout("good.txt",ios_base::out|ios_base::binary);
ifstream fin("test.txt",ios_base::in|ios_base::binary);

while(fin.read((char*)&temp,1))
    fout.write((char*)&temp,1);

fout.close();
fin.close();

After written the code, I am wondering if there's a buffer inside read and write method, cause if it doesn't offer buffers, read characters one by one and write one by one terribly affect the efficiency.

Would anyone can help answer my doubt.

[MiiNiPaa]

Streams in C++ are buffered by default.

[Chervil]

Although the buffering will help enormously with the efficiency, copying one character at a time still doesn't seem like the best approach.

Here's an example from JLBorges of a simple and efficient code to copy a file:
http://www.cplusplus.com/forum/beginner/132474/#msg712830