{{keywords>wiki library source code example reference}}
===== FILE =====
   FILE Pointer (stream)
   shows on a given file
   // here is a better explanation necessary
===== 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 == 0) {
perror("cannot open file");
}

fclose(filestream);
return 0;

}
</code>