Pick up on 3.4 Switch

ch_03/if-else/main.c

@@ -0,0 +1,32 @@
+/*
+ *
+ * Demonstration of the if-else statement
+ *
+ * Author: Kun Deng
+ */
+
+#include <stdio.h>
+
+
+int main()
+{
+    const int x = 15;
+    const int compared_value = 1024;
+
+    // The expression within the if statment evaluates the expression.
+    // The expression is true if the expression is a non-zero number.
+    // Otherwise it's false if 0. The reason for this if you're famililar
+    // with programming languages that have bool or boolean is the in C,
+    // there isn't a boolean type. Or well at least in not standards before
+    // C99.
+    if ((x < compared_value) != 0)
+    {
+        printf("Statement is true\n");
+    }
+    else
+    {
+        printf("Statement is false\n");
+    }
+
+    return 0;
+}