uses crt;

var a:array[1..20]of integer;

i,n,t,dem:integer;

begin

clrscr;

for i:=1 to 20 do 

  begin

repeat

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

until a[i]>0;

end;

t:=0;

for i:=1 to 20 do 

  t:=t+a[i];

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

dem:=0;

for i:=1 to 20 do 

  if a[i] mod 2=0 then inc(dem);

writeln('Trong mang co ',dem,' so chan');

readln;

end.

6:

#include <bits/stdc++.h>

using namespace std;

int main()

{

int n,A[100],i,dem=0;

cin>>n;

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

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

if (A[i]%2!=0) dem++;

cout<<dem;

return 0;

}

5:

#include <bits/stdc++.h>

using namespace std;

int main()

{

long long n,nn=1e6,A[1000];

cin>>n;

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

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

nn=min(nn,A[i]);

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

if (nn==A[i]) cout<<i<<" ";

return 0;

}

# Nhap mang

arr = [ ]

for i in range(10):

     arr.append(int(input('Nhap phan tu: ')))

# Tinh va xuat ra tong cac phan tu le trong mang tong_cac_phan_tu_le = 0

for x in arr:

     if x % 2 != 0:

          tong_cac_phan_tu_le += x

print('Tong cac phan tu le trong mang la:', tong_cac_phan_tu_le)

# Nen va xuat ra ngoai man hinh so phan tu duong trong mang so_phan_tu_duong = 0

for x in arr:

     if x > 0:

          so_phan_tu_duong += 1

print('So phan tu duong trong mang la:', so_phan_tu_duong)

# Tinh va xuat ra man hinh trung binh cong cac phan tu trong mang tong_phan_tu = 0

for x in arr:

          tong_phan_tu += x

trung_binh_cong = tong_phan_tu / len(arr)

print('Trung binh cong cac phan tu trong mang la:',trung_binh_cong)

# Tim va xuat ra man hinh gia tri va vi tri cua cac phan tu nho nhat trong mang

min_phan_tu = arr[0]

vi_tri_min_phan_tu = 0

for i in range(1, len(arr)):

     if min_phan_tu > arr[i]:

          min_phan_tu = arr[i]

           vi_tri_min_phan_tu = i

print('Gia tri cua phan tu nho nhat trong mang la:', min_phan_tu)

print('Vi tri cua phan tu nho nhat trong mang la:', vi_tri_min_phan_tu)

Bài 1:

#include <bits/stdc++.h>

using namespace std;

long long x,n,i,t;

int main()

{

cin>>n;

t=0;

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

{

cin>>x;

if ((x<0) and (x%2!=0)) t=t+x;

}

cout<<t;

return 0;

}

 tách ra từng câu hỏi đi bro

Câu 1: 

uses crt;

var a:array[1..200]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.

2:

uses crt;

var a:array[1..200]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:=1;

for i:=1 to n do 

  t:=t*a[i];

writeln(t);

readln;

end.

uses crt;

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

i,n,dem1,dem2:integer;

begin

clrscr;

readln(n);

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

for i:=1 to n do write(a[i]:4);

writeln;

dem1:=0;

for i:=1 to n do 

  if (a[i]>a[i-1]) and (a[i]>a[i+1]) then dem1:=dem1+1;

dem2:=0;

for i:=1 to n do 

  if (a[i]<a[i-1]) and (a[i]<a[i+1]) then dem2:=dem2+1;

writeln(dem1);

writeln(dem2);

readln;

end.

uses crt;

var a:array[1..200]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;

writeln('Mang nguoc la: ');

for i:=n downto 1 do 

  write(a[i]:4);

writeln;

t:=0;

for i:=1 to n do 

  if (a[i] mod 2=0) and (i mod 2=1) then t:=t+a[i];

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

writeln('Cac so chia het cho 2 va 5 la: ');

for i:=1 to n do 

  if (a[i] mod 2=0) and (a[i] mod 5=0) then write(a[i]:4);

readln;

end.