Bài 1: 

uses crt;

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

i,n:integer;

begin

clrscr;

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

for i:=1 to n do 

  begin

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

end;

for i:=1 to n do 

  if a[i] mod 2<>0 then write(a[i]:4);

readln;

end.

Bài 2: 

uses crt;

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

i,n:integer;

begin

clrscr;

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

for i:=1 to n do 

  begin

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

end;

for i:=1 to n do

  if a[i] mod 2=0 then write(a[i]:4);

readln;

end.

Bài 3: 

uses crt;

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

i,n,t:integer;

begin

clrscr;

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

for i:=1 to n do 

  begin

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

end;

t:=0;

for i:=1 to n do 

  if a[i] mod 2<>0 then t:=t+a[i];

writeln(t);

readln;

end.

Bài 2: 

#include <bits/stdc++.h>

using namespace std;

string st;

int d;

int main()

{

getline(cin,st);

d=st.length();

cout<<d;

return 0;

}

Bài 1:

Var so,i,n,dem:integer;

Begin

Write('Nhap so luong so n = ');readln(n);

For i:=1 to n do

Begin

Write('Nhap so thu ',i);readln(so);

If so mod 2 = 0 then dem:=dem+1;

End;

Write('Co ',dem,' so chan');

Readln;

End.

Bài 2:

Var st:string;

Begin

Write('Nhap vao xau ki tu ');readln(st);

Write(' Xau vua nhap co do dai la ',length(st));

Readln;

End.

1)

Var array:[1..1000] of integer;

i,n,t:integer;

Begin

Write('n = ');readln(n);

For i:=1 to n do

Begin

Write('Nhap so thu ',i,' = ');readln(a[i]);

End;

For i:=1 to n do

If a[i] > a[i+1] then

Begin

t:=a[i];

a[i]:=a[i+1];

a[i+1]:=t;

End;

Write('Sap xep tang dan ');

For i:=1 to n do write(a[i]:8);

Readln

End.

2)

Var array:[1..1000] of integer;

i,n,t:integer;

Begin

Write('n = ');readln(n);

For i:=1 to n do

Begin

Write('Nhap so thu ',i,' = ');readln(a[i]);

End;

For i:=1 to n do

If a[i] < a[i+1] then

Begin

t:=a[i];

a[i]:=a[i+1];

a[i+1]:=t;

End;

Write('Sap xep giam dan ');

For i:=1 to n do write(a[i]:8);

Readln

End.

Bạn ơi giúp mình với chiều nay mình thi rồi

Câu 2: 

uses crt;

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

i,n,tb:integer;

begin

clrscr;

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

for i:=1 to n do 

  begin

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

end;

tb:=0;

for i:=1 to n do 

  tb:=tb+a[i];

writeln(tb/n:4:2);

readln;

end.

trên c++

2:

#include <bits/stdc++.h>

using namespace std;

long long a[1000],n,i,dem;

int main()

{

cin>>n;

for (i=1; i<=n; i++) cin>>a[i];

dem=0;

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

if (a[i]%2==0 && a[i]<0) dem++;

cout<<dem;

return 0;

}

Program HOC24;

var i,m: integer;

t: longint;

a: array[1..1000] of integer;

begin

write('Nhap so phan tu M: '); readln(m);

for i:=1 to m do 

begin

write('Nhap so thu ',i,': '); readln(a[i]);

end;

for i:=1 to m do if a[i]<0 then t:=t+a[i];

write('Tong la: ',t);

readln

end.

Var a:array[1..200] of integer;

i,n,min:integer;

begin

write('Nhap so luong phan tu n = ');readln(n);

for i:=1 to n do

begin

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

min:=a[1];

if a[i] < min then min:=a[i];

end;

write('So nho nhat la ',min);

readln;

end.

Bài này mới đúng nhé!

Var a:array[1..200] of integer;

i,n,min:integer;

begin

write('Nhap so luong phan tu n = ');readln(n);

for i:=1 to n do

begin

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

end;

min:=a[1];

for i:=2 to n do

if a[i] < min then min:=a[i];

write('So nho nhat la ',min);

readln;

end.

Var a:array[1..200] of integer;

i,n,min:integer;

begin

write('Nhap so luong phan tu n = ');readln(n);

for i:=1 to n do

begin

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

end;

min:=a[1];

for i:=2 to n do

if a[i] < min then min:=a[i];

write('So nho nhat la ',min);

readln;

end.

Câu 4: 

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 (10<a[i]) and (a[i]<20) then 

begin

inc(dem);

t:=t+a[i];

end;

writeln('So phan tu lon hon 10 va nho hon 20 la: ',dem);

writeln('Tong cac phan tu lon hon 10 va nho hon 20 la: ',t);

readln;

end.

Câu 5:

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. 

Program HOC24;

var i,n,k,d: integer;

a: array[1..1000] of integer;

begin

readln(n,k);

for i:=1 to n do read(a[i]); readln;

d:=0;

for i:=1 to n do if a[i]=k then d:=d+1;

write(d);

readln

end.