-char const abcde[] = "abcde";
-char const abcdx[] = "abcdx";
-char const * teststring = "1234567890\nABCDEFGHIJKLMNOPQRSTUVWXYZ\nabcdefghijklmnopqrstuvwxyz\n";
+static char const abcde[] = "abcde";
+static char const abcdx[] = "abcdx";
+static char const teststring[] = "1234567890\nABCDEFGHIJKLMNOPQRSTUVWXYZ\nabcdefghijklmnopqrstuvwxyz\n";
+static char const testfile[]="testing/testfile";
+static char const testfile1[]="testing/testfile1";
+static char const testfile2[]="testing/testfile2";