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;

}

câu 1

Program Nguyen_to;

Var n,i:integer;

Function NT(n:integer):Boolean;

Var ok: Boolean;

i: integer;

Begin ok:=true;

for i:=2 to n-1 do if (n mod i)= 0 then ok:=ok and false;

if n < 2 then NT:=false else NT:=ok;

End;

Begin Write('Nhap n: ');

Readln(n); i:=n;

Repeat i:=i+1;

Until NT(i);

Write('So nguyen to nho nhat lon hon ',n, 'la: ',i);

Readln End.

câu 2

uses crt;

const so: set of char=['0','1','2','3','4','5','6','7','8','9'];

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

st,b:string;

c,l,i,n,j:integer;

s, Max: integer;

begin clrscr;

write('Nhap xau:');

readln(st);

l:=length(st);

i:=1;

n:=0;

repeat if (st[i] in so) then begin b:=''

repeat b:=b+st[i];

inc(i);

until (not(st[i] in so)) or (i>l);

inc(n);

val(b,a[n],c);

end;

inc(i);

until i>l;

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.

1. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do write(i:3);

readln;

end.

2. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do if(i mod 2 = 0) then write(i:3);

readln;

end.

1. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do write(i:3);

readln;

end.

2. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do if(i mod 2 = 0) then write(i:3);

readln;

end.

1.

program InDaySoTuNhien;
var n, i: integer;
begin
   write('Nhap so nguyen duong n: ');
   readln(n);

   writeln('Day so tu 1 den ', n, ' la:');
   for i := 1 to n do
      write(i, ' ');
end.

2.

program InSoChan;
var
   n, i: integer;
begin
   write('Nhap so nguyen n: ');
   readln(n);

   writeln('Cac so nguyen chan trong khoang tu 1 den ', n, ' la:');
   for i := 1 to n do
   begin
      if i mod 2 = 0 then
         write(i, ' ');
   end;
end.

program Le_Nho_Hon_Hoac_Bang_n;

uses crt;

var

       n, i: integer;

begin

       clrscr;

       write('Nhap vao mot so nguyen duong n: ');

       readln(n);

       while n <= 0 do

       begin

              writeln('So ban nhap khong hop le. Xin vui long nhap lai: ');

              readln(n);

       end;

       clrscr;

       writeln('Cac so le nho hon hoac bang ', n, ' la:');

       i := 1;

       while i <= n do

       begin

              if i mod 2 <> 0 then

                     writeln(i);

              i := i + 1;

       end;

       readln;

end.

#include <bits/stdc++.h>

using namespace std;

long n,i,dem,t;

int main()

{

cin>>n;

dem=0;

t=0;

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

if (n%i==0) 

{

dem++;

t=t+i;

}

cout<<dem<<" "<<t;

return 0;

}

uses crt;

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

 n,i,max,min,dem,t,dem1,t1,dem2,t2,dem3,t3,dem4,t4,k:integer;

begin

clrscr;

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

for i:=1 to n do 

begin     

write('A[',i,']='); readln(a[i]); 

end;

max:=a[1];

for i:=1 to n do 

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

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

dem:=0;

t:=0;

for i:=1 to n do 

if max=a[i] then     

begin       

inc(dem);

t:=t+a[i];       

vtmax[dem]:=i;     

end;

if dem>1 then   

begin     

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

writeln('Cac vi tri co so max la: ');     

for i:=1 to dem do       

write(vtmax[i]:4);   

end;

min:=a[1];

for i:=1 to n do 

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

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

dem1:=0;

t1:=0;

for i:=1 to n do 

if min=a[i] then     

begin       

inc(dem1);       

t1:=t1+a[i];       

vtmin[dem1]:=i;     

end;

if dem1>1 then   

begin     

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

writeln('Cac vi tri co so min la: ');     

for i:=1 to dem1 do       

write(vtmin[i]:4);   

end;

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

dem2:=0;

t2:=0;

for i:=1 to n do 

if (i mod 2=0) and (a[i] mod k=0) then     

begin       

dem2:=dem2+1;       

t2:=t2+a[i];     

end;

writeln('So phan tu o vi tri chan trong day la boi cua ',k,' la: ',dem2);

writeln('Tong cac so o vi tri chan trong day la boi cua ',k,' la: ',t2);

dem3:=0;

t3:=0;

for i:=1 to n do 

if (i mod 2=1) and (k mod a[i]=0) then     

begin       

inc(dem3);       

t3:=t3+a[i];     

end;

writeln('So phan tu o vi tri le trong day la uoc cua ',k,' la: ',dem3);

writeln('Tong cac so o vi tri le trong day la uoc cua ',k,' la: ',t3);

dem4:=0;

t4:=0;

for i:=1 to n do 

if (a[i]+k=1) or (a[i]=k+1) then     

begin       

inc(dem4);       

t4:=t4+a[i];     

end;

writeln('So phan tu la anh em cua ',k,' trong day la: ',dem4);

writeln('Tong cac phan tu la anh em cua ',k,' trong day la: ',t4);

readln;

end.

#include <bits/stdc++.h>
using namespace std;
int diaphuong(int n) {
if (n<2) {
    return 0;
}
int squareRoot = (int) sqrt(n);
int i;
for(int i=2; i<=squareRoot; i++) {
    if(n%i==0) {
        return 0;
    }
}
    return 1;
}

int main() {
int i, N;
cin >> N;
for(int i=0; i<=N; i++) {
    if(diaphuong(i)) {
    cout << i << endl;
}
}
}

Chúc bn học tốt!

Bài 1:

uses crt;

var n,i,s:integer;

begin

clrscr;

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

s:=0;

for i:=1 to n do 

 if i mod 6=0 then s:=s+i;

writeln(s);

readln;

end.

Bài 2: 

uses crt;

var a,b,c,ucln,i:integer;

begin

clrscr;

write('a='); readln(a);

write('b='); readln(b);

write('c='); readln(c);

while a<>b do 

  begin

if a>b then a:=a-b

else b:=b-a;

end;

ucln:=a;

while ucln<>c do 

 begin

if ucln>c then ucln:=ucln-c

else c:=c-ucln;

end;

writeln(ucln);

readln;

end.

Scratch hay java