Canon/open_set/65_float.pas

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2024-03-09 20:11:27 +08:00
program main;
const
RADIUS = 5.5; PI = 03.141595653589793; EPS = 0.000001;
EVAL1 = 95.033188;
CONV1 = 233;
MAX = 1000000000;
TWO = 2.9; THREE = 3; FIVE = 5;
e = 'e'; o = 'o';
var p:integer;
arr: array[0..9] of real;
input, area, area_trunc: real;
function float_abs(x: real):real;
begin
if x < 0 then
float_abs := -x
else
float_abs := x;
end;
function circle_area(radius: integer):real;
begin
circle_area := PI * radius *radius + (radius * radius) * PI / 2;
end;
function float_eq(a,b: real):integer;
begin
if float_abs(a - b) < EPS then
float_eq := 1
else
float_eq := 0
end;
procedure error;
begin
write(e);
end;
procedure ok;
begin
write(o);
end;
procedure assert(cond: integer);
begin
if cond = 0 then
error
else
ok;
end;
begin
assert(float_eq(circle_area(5), circle_area(FIVE)));
if 1.5 <> 0.0 then
ok;
if (not (3.3 = 0.0)) then
ok;
if (0.0 <> 0.0) and (3 <> 0.0) then
error;
if (0 <> 0.0) or (0.3 <> 0.0) then
ok;
p := 0;
arr[0] := 1.0;
arr[1] := 2.0;
input := 0.520;
area := PI * input;
area_trunc := circle_area(0);
arr[p] := arr[p] + input;
write(area);
write(area_trunc);
write(arr[0]);
end.