{{keywords>wiki library source code example reference}}
===== FILE =====
   FILE Pointer (stream)
   shows on a given file
   
   The data type FILE is a structure that contains information about a file
   or specified data stream. It includes such information as a file descriptor,
   current position, status flags, and more. It is most often used as a pointer
   to a file type, as file I/O functions predominantly take pointers as
   parameters, not the structures themselves (see example below).
===== C Sourcecode Example =====
<code c>
#include <stdio.h> /* including standard library */
//#include <windows.h> /* uncomment this for Windows */


int main (void)
{
    FILE *filestream;

    filestream=fopen("test.txt","r");

    if (filestream == NULL)
        perror("cannot open file");

    fclose(filestream);
    return 0;
}
</code>