program fantscrin;
var x_1,x_2,h,j,i: integer; f: boolean; a: array [1..3] of string; k,l: string;
function chek_number(a: integer): boolean;
var k: integer;
begin
if (a mod 2 < > 0) then
begin
chek_number: =false;
exit;
end;
while a > 0 do
begin
a: =a div 10;
k: =k+1;
end;
if (k = 3) then chek_number: =true
else chek_number: =false;
end;
begin
f: =false;
while f = false do
begin
write('введите 1-ое число: '); readln(x_1);
f: =chek_number(x_1);
end;
f: =false;
while f = false do
begin
write('введите 2-ое число: '); readln(x_2);
f: =chek_number(x_2);
if (f) then if (x_1 < > x_2) then f: =true
else f: =false;
end;
str(x_2,l);
str(x_1,k);
i: =1;
h: =1;
while i< =3 do
begin
j: =1;
while j< =3 do
begin
if (k[i] = l[j]) then
begin
a[h]: =k[i];
h: =h+1;
end;
j: =j+1;
end;
i: =i+1;
end;
writeln('');
i: =1;
while i < =3 do
begin
write (a[i], ' ');
i: =i+1;
end;
end.
1)
program pr;
uses crt;
Var y,x:real;
Begin
Writeln('vvedite x');
readln(x);
y:=(4*x)/(x-1);
Writeln('y=',y:10:3);
readln;
end.
2)
program pr;
Var n,i,a:integer;
Begin
Writeln('введите кол-во цыфр');
readln(n);
for i:=1 to n do Begin
readln(a);
if (a>9) and (a<1000) and (a mod 10=4) then Writeln(a);
end;
end.
2) использование массива
program pr;
uses crt;
Var n,i:integer;
a:array[1..100] of integer;
Begin
Writeln('Введите кол-во цифр');
readln(n);
Writeln('Введите цифры');
for i:=1 to n do read(a[i]);
Writeln;
for i:=1 to n do
if (a[i]>9) and (a[i]<1000) and (a[i] mod 10=4) then Write(a[i],';');
end.
