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program a;
const
gb=true;
gc='a';
gi=5;
gr=3.1415;
gs='nagi';
var
gv:integer;
function arithmetic_test(a:integer;b:char;c:real):integer;
var
d:integer;
e:char;
f:real;
begin
a:=1; d:=-2;
b:='B'; e:='\x46';
c:=1.5; f:=-3.14;
a:=a+b-c+d;
b:=b*c-d*e;
c:=c+d*e+f;
b:=1; e:=2;
a:=1/2+b/e;
d:=1 div 2 + b div e;
a:=a and e or b xor d;
d:=(a shl 3) xor (not a shr b);
arithmetic_test:=a+d
end;
function string_test():char;
var
s:string;
a,b:char;
begin
s:='hello world';
a:=s[3];
b:=s[6];
string_test:=s[b-a]
end;
function array_test():integer;
var
ai:array['a'..'z'] of integer;
ac:array[0..25] of char;
i:integer;
c:char;
begin
i:=0;
c:='z';
repeat
begin
ac[i]:=c;
ai[c]:=i;
i:=i+1;
c:=c-1
end until i>25;
array_test:=ai['f']-ac[5];
end;
function pointer_test():integer;
var
a,b:integer;
c:array[0..100] of integer;
p,q:^integer;
s:string;
ps:^char;
begin
a:=1;
p:=@c[0];
q:=@c[4];
b:=q-p;
p[0]:=a;
q[b]:=a;
(p+1)[0]:=a+1;
b:=p[0]+p[1];
s:='testabcd';
ps:=s+2;
pointer_test:=b+ps[3];
end;
function recursion_test(x:integer):integer;
begin
if (x=0) or (x=1) then
recursion_test:=1
else
recursion_test:=recursion_test(x-1)+recursion_test(x-2)
end;
function branch_test(a:integer):integer;
var
b,c,d:integer;
begin
b:=3;
c:=0;
d:=4;
if a<b then
c:=-1
else
if a>b then
c:=1;
while b>0 do
begin
while d>0 do
begin
d:=d-1;
if d=3 then
begin
d:=2;
break
end;
a:=a*d+b;
end;
b:=b-1
end;
repeat
begin
repeat
begin
d:=d+1;
if d=3 then
begin
d:=4;
continue;
end;
a:=a*c+d;
end
until d>5;
a:=a*c;
b:=b+1
end
until b>5;
branch_test:=a;
end;
function name_test_global():integer;
begin
gv:=1;
name_test_global:=gv+gb+gc+gi+gr+gs[3];
end;
function name_test_local():integer;
const
gb=false;
gc='A';
gi=10;
gr=2.71828;
gs='Hanjie Wu';
var
gv:integer;
begin
gv:=0;
name_test_local:=gv+gb+gc+gi+gr+gs[3];
end;
function name_test():boolean;
begin
name_test:=name_test_global()<>name_test_local()
end;
function void_test():void;
var
a,b:^void;
begin
end;
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