1.

Program Tim_Max; 
Var A:Array[1..255] of Integer; 
i, n, Max: Integer; 
Begin 
Write('Nhap n: '); Readln(n); 
For i := 1 to n do 
Begin 
Write('Nhap phan tu A[',i,'] = '); Readln(A[i]); 
End; 
Max := A[1]; 
For i := 2 to n do if A[i]>Max then Max := A[i]; 
Write('Phan tu lon nhat la :',Max); 
Readln 
End.

2.

Uses Crt;
Type Mang = ARRAY[1..50] Of Integer;
Var A:Mang;
N,i,j,Tam:Integer;
Begin
{Nhập mảng}
Write('Nhap N='); Readln(N);
For i:=1 To N Do
Begin
Write('A[',i,']='); Readln(A[i]);
End;
{Sắp xếp}
For i:=1 To N-1 Do
For j:=i+1 To N Do
If A[i]>A[j] Then
Begin
Tam:=A[i]; A[i]:=A[j]; A[j]:=Tam;
End;
{In kết quả ra màn hình}
Writeln('Ket qua sau khi sap xep:');
For i:=1 To N Do Write(A[i]:5);
Readln;
End.

3.

Uses Crt;
Type Mang = ARRAY[1..50] Of Integer;
Var A:Mang;
N,i,x:Integer;

Function TimKiem(x, N: Integer; A:Mang):Integer;
Var i:Integer;
Begin
I:=1;
While (I <= N) and (X<>A[I]) do I:=I+1; {{{{tại sao lại phải làm như bước này, tại sao lại lấy i đi so sánh với N}}}}
If I <= N Then Timkiem:=I Else Timkiem:=0;
End;

Begin
{Nhập mảng}
Write(‘Nhap N=’); Readln(N);
For i:=1 To N Do
Begin
Write(‘A[‘,i,’]=’); Readln(A[i]);
End;
Write(‘Nhap X=’); Readln(x);
{Kết quả tìm kiếm}
If TimKiem(X,N,A)<>0 Then 
Writeln(‘Vi tri cua X trong mang la:’, TimKiem(X,N,A))
Else Writeln(‘X khong co trong mang.’);
Readln;
End.

câu 1 tham khảo cái này nhé

Uses Crt;

Type Mang = ARRAY[1..50] Of Integer;

Var A:Mang;

    N,i,Max:Integer;

Begin

    Write('Nhap N='); Readln(N);

    For i:=1 To N Do

        Begin

            Write('A[',i,']='); Readln(A[i]);

        End;

    Max:=A[1];

    For i:=2 To N Do

    If Max<A[i] Then Max:=A[i];

    Writeln('Phan tu lon nhat cua mang:', Max);

    Readln;

End.

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

i,n,d,max:integer;

begin

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

for i:=1 to n do

begin

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

if a[i] mod 2 <> 0 then d:=d+1;

end;

max:=a[1];

for i:=2 to n do

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

writeln('Co ',d,' so le');

write('So lon nhat la ',max);

readln

end.

Bài 1: 

uses crt;

var c:aray[1..200]of integer;

i,vt1,vt2:integer;

begin

clrscr;

for i:=1 to 200 do 

  begin

write('C[',i,']='); readln(c[i]);

end;

for i:=1 to 200 do 

  if c[i]>0 then

begin

vt1:=i;

break;

end;

if vt1=0 then writeln('Khong co so duong trong day')

else writeln('So duong dau tien trong day la: ',c[vt1],' va chi so cua no la: ',vt1);

for i:=200 downto 1 do 

  if c[i]>0 then 

begin

vt2:=i;

break;

end;

if vt2=0 then writeln('Khong co so duong trong day')

else writeln('So duong cuoi cung trong day la: ',c[vt2],' va vi tri cua no la: ',vt2);

readln;

end.

uses crt;

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

i,n: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;

for i:=1 to n do 

  if (a[i]+a[i+1] mod 10=0) then 

begin

writeln(a[i],' ',a[i+1]);

writeln(i,' ',i+1);

end;

readln;

end.

#include <bits/stdc++.h>

using namespace std;

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

int main()

{

cin>>n;

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

for (i=1; i<=n; i++) cout<<a[i]<<" ";

cout<<endl;

t=0;

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

cout<<t;

return 0;

}

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.

uses crt;

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

i,n,x,dem:integer;

begin

clrscr;

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

for i:=1 to n do 

 begin

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

end;

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

dem:=0;

for i:=1 to n do 

  if a[i]=x then inc(dem);

writeln(dem);

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;

}

#include <bits/stdc++.h>

using namespace std;

long long n,i,a[10000];

int main()

{

cin>>n;

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

cin>>a[i];

for (i=1; i<=n; i++) cout<<a[i]<<" ";

return 0;

}

#include <bits/stdc++.h>

using namespace std;

long long x,n,i,nn,t;

int main()

{

cin>>n;

nn=LLONG_MAX;

t=0;

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

{

cin>>x;

t+=x;

nn=min(nn,x);

}

cout<<nn<<" "<<t;

return 0;

}