Added book examples

C4/wrong_answer.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void)
+{
+    // Declare and initialiase as required
+    int a = 1,b = 4;
+    float ans;
+
+    ans = a / b;	    // Perform calculation
+
+    // Display answer
+    printf ("\nThe answer is %f",ans);
+    
+    // Exit from program
+    return 0;
+}