uses crt;
var x,n,i,dem : integer;
a : array[1..100] of integer;
begin clrscr;
dem:=0;
write('Nhap n :'); readln(n);
for i:=1 to n do begin write('Nhap a[',i,']='); readln(a[i]); end;
write('Nhap x :'); readln(x);
for i:=1 to n do if a[i] = x then dem:=dem+1;
if dem=0 then write('Khong co gia tri nao bang ',x, '')
else write('Co ',dem,' gia tri bang ',x,' trong mang');
readln
end.

uses crt;
var n,x,dem,i:longint; a:array[1..10000000]of longint;
begin
clrscr;
   write('n=');readln(n);
   write('x=');readln(x);
   for i:=1 to n do
      begin
         write('a[',i,']=');readln(a[i]);
         if a[i]=x then inc(dem);
      end;
   if dem>0 then writeln(x,' xuat hien ',dem,' lan trong day.') else
   writeln(x,' khong xuat hien trong day .');
readln
end.

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Test