program PascalGuru;
type
xy = record
x: real;
y: real;
end;
var
n, i: integer;
t: array [1 .. 3] of xy;
rastAB, rastAC, rastBC: real;
procedure min(ab, ac, bc: real);
var
min: real;
ms: string;
begin
min := ab;
ms := 'Min(AB)=';
if acthen begin min := ac;
ms := 'Min(AC)=';
end;
if bcthen begin min := bc;
ms := 'Min(BC)=';
end;
writeln(ms, min:0:2);
end;
function rastoyanie(ax, ay, bx, by: real): real;
begin
rastoyanie := sqrt(sqr(bx - ax) + sqr(by - ay));
end;
begin
write('Vvedite koordinaty tociki A: ');
readln(t[1].x, t[1].y);
write('Vvedite koordinaty tociki B: ');
readln(t[2].x, t[2].y);
write('Vvedite koordinaty tociki C: ');
readln(t[3].x, t[3].y);
writeln;
writeln('Vy vveli:');
writeln('A(', t[1].x:0:2, ',', t[1].y:0:2, ')');
writeln('B(', t[2].x:0:2, ',', t[2].y:0:2, ')');
writeln('C(', t[3].x:0:2, ',', t[3].y:0:2, ')');
rastAB := rastoyanie(t[1].x, t[1].y, t[2].x, t[2].y);
rastAC := rastoyanie(t[1].x, t[1].y, t[3].x, t[3].y);
rastBC := rastoyanie(t[2].x, t[2].y, t[3].x, t[3].y);
writeln;
writeln('L(AB)= ', rastAB:0:2);
writeln('L(AC)= ', rastAC:0:2);
writeln('L(BC)= ', rastBC:0:2);
writeln;
min(rastAB, rastAC, rastBC);
readln;
end.