Program Tin_hoc;

uses crt;

var n,i,dem:integer;

      a:array[1..10000] of integer;

Begin

clrscr;

readln(n);

dem:=0;

for i:= 1 to n do 

  Begin

  readln(a[i]);

  if a[i] mod 2 = 0 then inc(dem);

  end;

writeln('Day so co ',dem,' so chan');

readln;

end.

uses crt;

Var i,n,dem:integer;

     a: array[1..1000] of integer;

Begin

clrscr;

Write('Nhap do dai cua day: ');readln(n);

dem:=0;

for i:= 1 to n do

  Begin

  write('So thu ',i,' = ');

  readln(a[i]);

  if a[i] mod 2 = 0 then inc(dem);

  end;

Writeln('Day so co ',dem,' so chan');

readln;

End.

uses crt;

Var i,n,dem:integer;

     a: array[1..1000] of integer;

Begin

clrscr;

Write('Nhap do dai cua day: ');readln(n);

dem:=0;

for i:= 1 to n do

  Begin

  write('So thu ',i,' = ');

  readln(a[i]);

  if a[i] mod 2 = 0 then inc(dem);

  end;

Writeln('Day so co ',dem,' so chan');

readln;

End.

uses crt;

Var i,n,dem:integer;

     a: array[1..1000] of integer;

Begin

clrscr;

Write('Nhap do dai cua day: ');readln(n);

dem:=0;

for i:= 1 to n do

  Begin

  write('So thu ',i,' = ');

  readln(a[i]);

  if a[i] mod 2 = 0 then inc(dem);

  end;

Writeln('Day so co ',dem,' so chan');

readln;

End.

uses crt;

var i,n,dem:longint;a:array[1..1000]of longint;

begin

clrscr;

write('nhap so phan tu cua day:');readln(n);

for i:=1 to n do

begin

write('nhap phan tu thu',i,'=');readln(a[i]);

end;

for i:=1 to n do if(a[i] mod 2=0)then inc(dem);

writeln('co tat ca:',dem,'so chan');

readln;

end.

program im_14424;
uses crt;
var A: array [1..99999] of integer;
i,n,dem : integer;
begin
clrscr;
dem:=0;
write('Nhap vao so phan tu: ',n);
readln(n);
for i:=1 to n do
begin
write('Nhap vao phan tu thu ',i,':');
readln(A[i]);
if (A[i] mod 2 = 0) then dem:=dem+1;
end;
write('So cac so chan la: ',dem);
readln(dem);
end.

uses crt;

var a:array[1..100]of integer;

i,n,dem:integer;

begin

clrscr;

write('Nhap n='); readln(n);

for i:=1 to n do 

  begin

write('A[',i,']='); readln(a[i]);

end;

dem:=0;

for i:=1 to n do 

  if a[i] mod 2=0 then inc(dem);

writeln(dem);

readln;

end.

#include <bits/stdc++.h>

using namespace std;

long long x,n,i,dem;

int main()

{

cin>>n;

dem=0;

for (i=1; i<=n; i++)

{

cin>>x;

if (x%2==0) dem++;

}

cout<<dem;

return 0;

}

Câu 1: 

uses crt;

var a:array[1..100]of integer;

i,n,t,s:integer;

begin

clrscr;

write('Nhap n='); readln(n);

for i:=1 to n do 

  begin

write('A[',i,']='); readln(a[i]);

end;

t:=0;

s:=1;

dem:=0;

for i:=1 to n do 

  if a[i] mod 3=0 then 

begin

inc(dem);

t:=t+a[i];

s:=s*a[i];

end;

if dem=0 then writeln('Khong co so chia het cho 3 trong day')

else begin

writeln('Tong cac so chia het cho 3 la: ',t);

writeln('Tich cac so chia het cho 3 la: ',s);

end;

readln;

end.

Câu 2: 

uses crt;

var a:array[1..100]of integer;

i,n,dem,t:integer;

begin

clrscr;

write('Nhap n='); readln(n);

for i:=1 to n do 

  begin

write('A[',i,']='); readln(a[i]);

end;

dem:=0;

t:=0;

for i:=1 to n do 

 if a[i] mod 2=0 then 

begin

inc(dem);

t:=t+a[i];

end;

writeln('So so chan la: ',dem);

writeln('Tong cac so chan la: ',t);

readln;

end.

Câu 3: 

uses crt;

var a:array[1..100]of integer;

i,n,dem1,dem2,t1,t2,s1,s2:integer;

begin

clrscr;

write('Nhap n='); readln(n);

for i:=1 to n do 

  begin

write('A[',i,']='); readln(a[i]);

end;

dem1:=0;

dem2:=0;

t1:=0;

t2:=0;

s1:=1;

s2:=1;

for i:=1 to n do

begin

if a[i] mod 2=0 then 

begin

inc(dem1);

t1:=t1+a[i];

s1:=s1*a[i];

end

else begin

inc(dem2);

t2:=t2+a[i];

s2:=s2*a[i];

end;

end;

if dem1=0 then writeln('Khong co so chan trong day')

else begin

writeln('So so chan la: ',dem1);

writeln('Tong cac so chan la: ',t1);

writeln('Tich cac so chan la: ',s1);

end;

if dem2=0 then writeln('Khong co so le trong day')

else begin

writeln('So so le la: ',dem2);

writeln('Tong cac so le la: ',t2);

writeln('Tich cac so le la: ',s2);

end;

readln;

end.

Câu 2: 

a) Mô tả thuật toán

-Bước 1: Nhập n và nhập dãy số

-Bước 2: dem←0; i←1; t←0;

-Bước 3: Nếu a[i] mod 2=0 thì dem←dem+1 và t←t+a[i];

-Bước 4: i←i+1;

-Bước 5: Nếu i<=n thì quay lại bước 3

-Bước 6: Xuất t và dem

-Bước 7: Kết thúc

Câu 2: 

b) uses crt;

var a:array[1..100]of integer;

i,n,t,dem:integer;

begin

clrscr;

write('Nhap n='); readln(n);

for i:=1 to n do 

begin

write('A[',i,']='); readln(a[i]);

end;

t:=0;

dem:=0;

for i:=1 to n do 

 if a[i] mod 2=0 then 

begin

t:=t+a[i];

inc(dem);

end;

writeln('So so chan la: ',dem);

writeln('Tong cac so chan la: ',t);

readln;

end.