Var a:array[1..15] of integer;

i,s:integer;

Begin

I:=1;

While i<=15 do

Begin

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

s:=s+a[i];

i:=i+1;

End;

Write('Tong la ',s);

Readln;

End.

Bài 1: 

uses crt;

var n,i,s:integer;

begin

clrscr;

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

s:=0;

i:=1;

while i<=n do 

  begin

s:=s+i;

inc(i);

end;

writeln('Tong cac so trong khoang tu 1 den ',n,' la: ',s);

readln;

end.

Bài 2: 

uses crt;

var n,i,s:integer;

begin

clrscr;

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

s:=0;

i:=1;

while i<=n do 

  begin

s:=s+i;

i:=i+2;

end;

writeln('Tong cac so le trong khoang tu 1 den ',n,' la: ',s);

readln;

end.

alo

#include <bits/stdc++.h>

using namespace std;

long long a[1000],n,i;

//chuongtrinhcon

bool ktnt(long long x)

{

if (x<=1) return(false);

for (int i=2; i*i<=x; i++)

if (x%i==0) return(false);

return(true);

}

//chuongtrinhchinh

int main()

{

cin>>n;

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

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

return 0;

}

program tim_uoc;

uses crt;

var i,n,tong:integer;

begin

clrscr;

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

i:=1;tong:=0;

writeln('cac uoc cua ',n,' la:');

while i<=n do

if n mod i=0 then

begin

write(i:3);

inc(i);

end;

writeln;

i:=1;writeln('cac uoc chan:');

while i<=n do

begin

if n mod i=0 then 

begin

if i mod 2=0 then write(i:3);

tong:=tong+i;

end;

end;

writeln;

write('tong cac uoc chan:',tong);

readln;

end.

uses crt;

var n,i,t:integer;

begin

clrscr;

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

i:=1;

writeln('Cac uoc cua ',n,' la: ');

while i<=n do

  begin

if n mod i=0 then write(i:4):

i:=i+1;

end;

writeln;

writeln('Cac uoc chan cua ',n,' la: ');

t:=0;

i:=1;

while i<=n do 

  begin

if (n mod i=0) then

begin

t:=t+i;

write(i:4);

end;

inc(i);

end;

writeln('Tong cac uoc chan cua ',n,' la: ',t);

readln;

end.

uses crt;

var a,b:integer;

begin

clrscr;

readln(a,b);

writeln(a div b);

writeln(a mod b);

readln;

end.

program timtich;

uses  crt;

var i,n:integer;

tich:longint;

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

begin

clrscr;

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

for i:=1 to n do

begin

write('nhap phan tu a[',i,']:');readln(a[i]);

end;

for i:=1 to n do

write(a[i]:4);

tich:=1;

writeln;

for i:=1 to n do

if a[i] mod 2=0 then tich:=tich*a[i];

writeln('tich ca phan tu chan cua mang la:',tich);

readln;

end.

program timtong;

uses  crt;

var i,n:integer;

tong:longint;

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

begin

clrscr;

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

for i:=1 to n do

begin

write('nhap phan tu a[',i,']:');readln(a[i]);

end;

for i:=1 to n do

write(a[i]:4);

tong:=0;

writeln;

for i:=1 to n do

if a[i] mod 2=0 then tong:=tong+a[i];

writeln('tong cac phan tu chan cua mang la:',tong);

tong:=0;

writeln;

for i:=1 to n do

if a[i] mod 2=1 then tong:=tong+a[i];

writeln('tong cac phan tu le cua mang la:',tong);

readln;

end.

Bài 1: 

uses crt;

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

i,n,s:integer;

begin

clrscr;

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

for i:=1 to n do 

begin

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

end;

s:=1;

for i:=1 to n do 

  if a[i] mod 2=0 then s:=s*a[i];

writeln(s);

readln;

end.

uses crt;

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

i,n,t1,t2:integer;

begin

clrscr;

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

for i:=1 to n do 

begin

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

end;

t1:=0;

t2:=0;

for i:=1 to n do

begin

if a[i] mod 2=0 then t1:=t1+a[i]

else t2:=t2+a[i];

end;

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

writeln('Tong cac so le la: ',t2);

readln;

end.

Bài 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 5=0 then t:=t+a[i];

writeln('Tong cac so chia het cho 5 la: ',t);

readln;

end.

Bài 2: 

uses crt;

var st:string;

d,i:integer;

begin

clrscr;

write('Nhap xau:'); readln(st);

d:=length(st);

for i:=1 to d do 

  if st[i]=#32 then delete(st,i,1);

writeln(st);

readln;

end.

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