move exercises and lectures into subfolders

Exercises/C6/ex1.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void)
+{
+    // Declare some variables
+    int  a, b;
+
+    // Note: Order of a,b indicates the order in which operations are carried out on execution
+    
+    // Increment operators
+    b = 3;
+    printf("a=%d b=%d\n", a, b);
+    a = ++b;    // b is now 4, a is also 4
+    printf("a=%d b=%d\n", a, b);
+    a = b++;    // a is 4, b is now 5, 
+    printf("a=%d b=%d\n", a, b);
+    
+    // Decrement operators (reset a back to 3)
+    b = 3;
+    printf("a=%d b=%d\n", a, b);
+    a = b--;    // a is 3, b is now 2    
+    printf("a=%d b=%d\n", a, b);
+    a = --b;    // b is now 1, a is also 1
+    printf("a=%d b=%d\n", a, b);
+    
+    return 0;	// Exit from main
+}

Exercises/C6/ex2.c

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+#include <stdio.h>
+
+int main() {
+	unsigned int a = 60;
+	unsigned int b = 13;
+	unsigned int r;
+
+	r = a & b;
+	printf("bitwise AND of 60 and 13: %d\n", r);
+	r = a | b;
+	printf("bitwise OR of 60 and 13: %d\n", r);
+	r = a ^ b;
+	printf("bitwise XOR of 60 and 13: %d\n", r);
+}

Exercises/C6/ex3.c

@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+int main() {
+	unsigned int a = 0x60;
+	unsigned int b = 0x13;
+	unsigned int r;
+
+	r = a & b;
+	printf("bitwise AND of 0x60 and 0x13: 0x%02x\n", r);
+	r = a | b;
+	printf("bitwise OR of 0x60 and 0x13: 0x%02x\n", r);
+	r = a ^ b;
+	printf("bitwise XOR of 0x60 and 0x13: 0x%02x\n", r);
+}

Exercises/C6/inc_dec_examples.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void)
+{
+    // Declare some variables
+    int  a, b;
+
+    // Note: Order of a,b indicates the order in which operations are carried out on execution
+    
+    // Increment operators
+    b = 3;
+    a = ++b;    // b is now 4, a is also 4
+    a = b++;    // a is 4, b is now 5, 
+    
+    // Decrement operators (reset a back to 3)
+    b = 3;
+    a = b--;    // a is 3, b is now 2    
+    a = --b;    // b is now 1, a is also 1
+    
+    return 0;	// Exit from main
+}