2: 

uses crt;

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

n,i: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]<0 then write(i:4);

readln;

end.

sao bài này giống bài tập cô mình giao thế nhỉ:>

4 

var max,min,n,i: integer;

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

begin

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

for i:=1 to n do

begin

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

end;

max:=a[1];min:=a[1];

for i:=1 to n do

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

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

write('so lon nhat trong day la: ',max);writeln;

write('so nho nhat trong day la: ',min);writeln;

readln;

end.

uses crt;
var a: array[1..100] of longint;
    i,n,max,min: longint;

begin
    clrscr;
    readln(n);
    for i:=1 to n do
    begin
        write('Nhap so thu ',i,': '); 
        readln(a[i]);
    end;
    max:=a[1]; min:=a[1];
    for i:=1 to n do
    begin
        if max<a[i] then max:=a[i];
        if min>a[i] then min:=a[i];
    end;
    writeln('So lon nhat trong mang la: ',max);
    write('So nho nhat trong mang la: ',min);
    readln
end.

#include <bits/stdc++.h>

using namespace std;

long long a[100],n,i,s,t,ln,nn;

int main()

{

cin>>n;

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

cin>>a[i];

s=1;

t=0;

ln=a[1];

nn=a[1];

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

{

s=s*a[i];

t+=a[i];

ln=max(ln,a[i]);

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

}

cout<<s<<endl;

cout<<t<<endl;

cout<<ln<<endl;

cout<<nn;

return 0;

}

uses crt;

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

i,n,t,ln,nn:integer;

begin

clrscr;

readln(n);

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

t:=0;

for i:=1 to n do

  if a[i]>0 then t:=t+a[i];

ln:=a[1];

nn:=a[1];

for i:=1 to n do 

begin

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

if nn>a[i] then nn:=a[i];

end;

writeln(t);

writeln(ln);

writeln(nn);

readln;

end.

Uses crt;

var n,i,max,min: integer;

a: array[1..100] of longint;

begin clrscr;

readln(n);

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

max:=a[1];

for i:=1 to n do if(max<a[i]) then max:=a[i];

writeln(max);

min:=a[1];

for i:=1 to n do if(min>a[i]) then min:=a[i];

writeln(min);

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.

Uses crt;

var max,min,n,i,m,n: longint;

a: array[1..100] of longint

begin clrscr;

for i:=1 to n do begin

if(a[i] mod 2=0) then m:=m+a[i];

if(a[i] mod 2<>0) then n:=n+a[i];

end;

max:=a[1];

min:=a[1];

for i:=1 to n do begin

if(max<a[i]) then max:=a[i];

if(min>a[i]) then min:=a[i];

end;

Writeln('Tong cac phan tu chan: ',m);

Writeln('Tong cac phan tu le: ',n);

Writeln('Phan tu co gia tri lon nhat: ',max);

Writeln('Phan tu co gia tri nho nhat: ',min);

readln;

end.