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What is the difference between open and create function in c?

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What is the difference between open and create function in c?
posted Jan 28, 2014 by anonymous

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1 Answer

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The creat function creates files, but can not open existing file. If using creat on an existing file, the file will be truncated and can only be written to.

open is a system call that is used to open a new file and obtain its file descriptor.This system call can also be used for creating a file before opening it.

answer Feb 2, 2014 by Vikas Upadhyay
which system call is used just to create a file not open ?
internal implementation of creat.
int creat(const char *path, mode_t mode)
{
    return open(path, O_WRONLY|O_CREAT|O_TRUNC, mode);
}
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