VHDL PROGRAM FOR THREE INPUT LOGIC GATES USING CASE STATEMENT IN BEHAVIOURAL STYLE

library IEEE;
use IEEE.std_logic_1164.all;
entity comp is
port (
altbin: in STD_LOGIC;
aeqbin: in STD_LOGIC;
agtbin: in STD_LOGIC;
a: in STD_LOGIC_VECTOR (3 downto 0);
b: in STD_LOGIC_VECTOR (3 downto 0);
agtbout: out STD_LOGIC;
aeqbout: out STD_LOGIC;
altbout: out STD_LOGIC
);
end comp;
architecture comp of comp is
begin
process(a,b,agtbin,aeqbin,altbin)
begin
agtbout<='0'; --initializes the outputs to ‘0’
aeqbout<='0';
altbout<='0';
if aeqbin='1' then
if a=b then aeqbout<='1';
elsif a>b then agtbout<='1';
elsif (a
end if;
elsif (altbin/=agtbin)then
agtbout<=agtbin;
altbout<=altbin;
end if;
end process;
end Comp;