Question 10310 – Programming

What function of x, n is computed by this program?

 Function what (x, n:integer): integer:
 Var
     value : integer;
     begin
     value:=1
     if n>0 then
 begin
     if n mod 2 = 1 then
     value:=value*x;
     value:=value*what(x*x, n div 2);
     end;
     what:value
     end;

Correct Answer: A

Theory Explanation.

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