Replicate characters and strings

[Erik Sigra]

I wonder how to replicate characters and strings. Here is an Ada program that 
does prints "-------------abcabcabc": 

 with Ada.Text_IO; use Ada.Text_IO; 
with Ada.Strings.Unbounded; use Ada.Strings.Unbounded; 
procedure Prov is 
S : Unbounded_String := 13 * '-' & 3 * "abc"; 
begin 
Put_Line(To_String(S)); 
end Prov; 


I can't seem to achieve the equivalet with g++.