unistd.h

I've changed from a linux computer to a windows and I'm having trouble compiling my code because these two OS don't share the same header files. Since the unistd.h is not obviously included, Visual C doesn't know what read() , write() , close() , socklen_t() and bzero() functions are. Can anyone help me with this? I've googled this: Is there a replacement for unistd.h for Windows (Visual C)? I have no idea how unistd.h works, nor do I know how to code my own. Can someone please link me to one? Your best bet is to use MinGW to compile the program, which includes (among other things) GCC (and

When including the sleep function from unistd.h the program hangs indefinitely: #include <stdio.h> #include <unistd.h> int main() { int i; printf("0 "); for(i = 1; i <20; ++i) { sleep(2); printf("%d ", i); } printf("\n"); return 0; } The rest runs fine when sleep(2) is commented out, any ideas? There's nothing wrong with the code, but note that in many cases the output of printf is buffered, meaning that the output appears on the console only if you explicitly call fflush(stdout) , you print a newline, or the buffer becomes full. Since you don't print a newline until the very end, you will see

I am now trying to understand how read(2) function works by looking into the actual code implementation and first, I try to see how it is defined in #include header file. In that file, I found this : ssize_t read(int, void *, size_t) __DARWIN_ALIAS_C(read); And then, I googled to find the actual read() function declaration. And, https://github.com/lattera/glibc/blob/master/io/read.c I found this. In this code, /* Read NBYTES into BUF from FD. Return the number read or -1. */ ssize_t __libc_read (int fd, void *buf, size_t nbytes) { if (nbytes == 0) return 0; if (fd < 0) { __set_errno (EBADF);

After having installed libpng into my computer, I've included it into my project using #include <png.h> on a Windows 7 SP1 plateform and using Visual Studio Ultimate 2013. But at build time, I'm getting this error: C1083: Cannot open include file: 'unistd.h': No such file or directory How do I please to fix this? I haven't found yet any solution in the net? The "uni" in unistd stands for "UNIX" - you won't find it on a Windows system. Most widely used, portable libraries should offer alternative builds or detect the platform and only try to use headers/functions that will be provided, so it's

I have come across this particular snippet of code many times in solutions of competitive programming contests. I understand the basic use of this code to beat time limits but i want to understand it more deeply. I know that unistd.h gives access to system call wrapper functions such as fork, pipe and I/O primitives (read, write, ..). It will also be great if anyone can explain or guide me to resources that can help me understand it further. #include <stdlib.h> #include <stdint.h> #include <unistd.h> class FastInput { public: FastInput() { m_dataOffset = 0; m_dataSize = 0; m_v = 0x80000000; }

i have vlc (program to reproduce videos) if i type in a shell: /home/vlc "/home/my movies/the movie i want to see.mkv" it opens up an reproduces the movie. however, when I run the following program: #include <unistd.h> int main(void) { execl("/home/vlc", "/home/my movies/the movie i want to see.mkv",NULL); return 0; } vlc opens up but doesn't reproduce anything. How can I solve this? Things I tried: I guessed execl("/home/vlc", "/home/my movies/the movie i want to see.mkv",NULL); was equivalent to typing in the shell: /home/vlc /home/my movies/the movie i want to see.mkv which doesn't work, so