*/
bool begins_with(const char *str, const char *prefix);
+/*
+ * Check the string only contains digit characters.
+ *
+ * str
+ * string to check for digits
+ *
+ * Returns:
+ * 1 str only contains digit characters, 0 otherwise
+ */
+int all_digit(const char *str);
+
#endif /* _FRRSTR_H_ */