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--- c:keywords:file [2013/01/22 22:02]
127.0.0.1 external edit
+++ c:keywords:file [2024/02/16 01:05] (current)
@@ Line 3: / Line 3: @@
    FILE Pointer (stream)
    shows on a given file
-   // here is a better explanation necessary
+   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>
@@ Line 10: / Line 15: @@
-int main ( void )
+int main (void)
 {
-FILE *filestream;
+    FILE *filestream;
-filestream=fopen("test.txt","r");
+    filestream=fopen("test.txt","r");
-if (filestream == 0) {
+    if (filestream == NULL)
-perror("cannot open file");
+        perror("cannot open file");
-}
-fclose(filestream);
-return 0;
+    fclose(filestream);
+    return 0;
 }
 </code>

on the occasion of the current invasion of Russia in Ukraine