move exercises and lectures into subfolders

Exercises/C18/BinaryFile/binary_file_example.c

@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+// Main () - execution starts here
+int main (void)
+{
+
+    // Declate file stream variables
+    FILE *fInput, *fOutput;
+
+    // Other variables needed
+    int i;
+    int SampleArray[10] = {1,2,3,4,5,6,7,8,9,10};
+    float f = 23.4;
+
+    // Try and open the binary "numbers.dat" (in the current directory) file for writing
+    fOutput = fopen ("numbers.dat", "wb");
+
+    // Check we were able to open the file
+    if ( fOutput == NULL)
+    {
+        printf ("\nThe file could not be opened for writing, exiting");
+        return -1;
+    }
+
+    // Write out a single float to the binary file
+    fwrite ( &f, sizeof(float), 1 , fOutput);
+
+    // Now the entire array on one go
+    fwrite ( SampleArray, sizeof(int), 10 , fOutput);
+
+    // And close the file
+    fclose (fOutput);
+
+
+    // Try and open the binary "numbers.dat" (in the current directory) file for reading
+    fInput = fopen ("numbers.dat", "rb");
+
+    // Check we were able to open the file
+    if ( fInput== NULL)
+    {
+        printf ("\nthe file could not be opened for reading, exiting");
+        return -1;
+    }
+
+    // Read a single float from the binary file into f
+    fread ( &f, sizeof(float), 1 , fOutput);
+
+    // Now read the entire array on one go
+    fread ( SampleArray, sizeof(int), 10 , fOutput);
+
+    // Display the values read from the file on the screen
+    printf ("The value read into f is %f\n", f);;
+    for ( i = 0 ; i < 10 ; i++)
+    {
+        printf ("Item %d of the array contains %d\n",i, SampleArray[i]);
+    }
+
+    // And close the file
+    fclose (fInput);
+
+
+    return (0);     // Exit indicating sucess
+}