Changes to file structure for VSCode and bug fixes

C18/FileOpen/file_open_example.c

@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+// Main () - execution starts here
+int main (void)
+{
+
+    // Declate file stream variables
+    FILE *fInput, *fOutput, *fRecords;
+
+
+    // Try and open the text "sample.txt" (in the current directory) file for reading
+    fInput = fopen ("sample.txt", "r");
+
+    // Check we were able to open the file
+    if ( fInput == NULL)
+    {
+        printf ("\nthe file could not be opened");
+        return -1;	// Exit as unsuccessful 
+    }
+    
+	fclose (fInput);	// Close the file
+
+    // Try and open the binary "samples.dat" (in the current directory) file for writing
+    // if a file of this name already exists it will be deleted
+    fOutput = fopen ("samples.dat", "wb");
+
+    // Check we were able to open the file
+    if ( fOutput == NULL)
+    {
+        printf ("\nthe file could not be opened");
+		return -1;	// Exit as unsuccessful 
+    }
+
+	fclose (fOutput);	// Close the file
+
+    // Open, for appending, the text file "records.txt". If the file does not already
+    // exists, a new one of this name will be created (as if "w") were the mocde
+    fRecords = fopen ("records.txt", "a");
+
+    // Check we were able to open the file
+    if ( fRecords == NULL)
+    {
+        printf ("\nthe file could not be opened");
+		return -1;	// Exit as unsuccessful 
+    }
+
+	fclose (fRecords);
+
+
+    return (0);     // Exit indicating sucess
+}