Add a simple pointer example

pointers.c

@@ -0,0 +1,25 @@
+#include <stdio.h>
+
+int main(void)
+{
+    char ch = 'c';
+    char *chptr = &ch;
+
+    int i = 20;
+    int *intptr = &i;
+
+    char *ptr = "I am\0a string"; /* %s will read from *ptr (which is I) to \0 */
+
+    /*
+     * Output:
+     *
+     * *chptr: [c], *intptr: [20], *ptr: [I], (*ptr+1): [J], (*ptr+2): [K],
+     * *(ptr+2): [a], ptr: [I am a string]
+     *
+     */
+    printf("*chptr: [%c], *intptr: [%d], *ptr: [%c], "
+           "(*ptr+1): [%c], (*ptr+2): [%c], *(ptr+2): [%c], ptr: [%s]\n",
+           *chptr, *intptr, *ptr, (*ptr+1), (*ptr+2), *(ptr+2), ptr);
+
+    return 0;
+}