Question

I am still confused about the difference between ostream& write ( const char* s , streamsize n ) in c++ and cout in c++
The first function writes the block of data pointed by s, with a size of n characters, into the output buffer. The characters are written sequentially until n have been written.
whereas cout is an object of class ostream that represents the standard output stream. It corresponds to the cstdio stream stdout.
Can anyone clearly bring out the differences between the two functions.

Answer 1

ostream& write ( const char* s , streamsize n );

Is an Unformatted output function and what is written is not necessarily a c-string, therefore any null-character found in the array s is copied to the destination and does not end the writing process.

cout is an object of class ostream that represents the standard output stream.
It can write characters either as formatted data using for example the insertion operator ostream::operator<< or as Unformatted data using the write member function.