Added 'char_to_socktype' function

easysock.h

@@ -60,4 +60,10 @@ AF_INET6 respectively. */
 
 int int_to_inet(int network);
 
+/* char_to_socktype - Takes a character that represents a transport-layer protocol
+(currently only supports 'T' for TCP or 'U' for UDP - exits with error code 250 if 
+the given characters is neither of these) and return the appropriate SOCKTYPE value. */
+
+int char_to_socktype(char transport);
+
 #endif