uses crt;

var a:array[1..250]of integer;

i,n,t:integer;

begin

clrscr;

readln(n);

t:=0;

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 t:=t+a[i];

writeln(t);

readln;

end.

uses crt;
var a,b:array[1..100]of integer;
n,i,dem,max,tam,j:integer;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
until (0<n) and (n<=100);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
writeln('Cac so chia het cho 4 la: ');
for i:=1 to n do
if a[i] mod 4=0 then write(a[i]:4);
writeln;
dem:=0;
for i:=1 to n do
if a[i] mod 7=0 then
begin
inc(dem);
b[dem]:=a[i];
end;
max:=b[1];
for i:=1 to dem do
if max<b[i] then max:=b[i];
writeln('So lon nhat chia het cho 7 la: ',max);
writeln('Cac chi so cua no trong day A la: ');
for i:=1 to n do
if max=a[i] then write(i:4);
writeln;
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;
writeln('Day so sau khi sap xep giam dan la: ');
for i:=1 to n do
write(a[i]:4);
readln;
end.

uses crt;

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

i,n,t:integer;

begin

clrscr;

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

if (n>0) and (n<=100) then

begin

t:=0;

for i:=1 to n do

begin

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

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

end;

writeln('tong cac phan tu chan hoac le trong day la: ',t);

end

else writeln('vui long nhap lai');

readln;

end.

#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;

t=t+x;

}

cout<<t;

return 0;

}

#include <bits/stdc++.h>

using namespace std;

double a,b,cv,dt;

int main()

{

cin>>a>>b;

cv=(a+b)*2;

dt=a*b;

cout<<fixed<<setprecision(2)<<cv<<endl;

cout<<fixed<<setprecision(2)<<dt;

return 0;

}

#include <bits/stdc++.h>

using namespace std;

string s1;

int d,i;

int main()

{

getline(cin,s1);

d=s1.length();

for (i=0; i<=d-1; i++)

if ((s1[i]<48) or (s1[i]>57)) cout<<s1[i];

return 0;

}

#include <bits/stdc++.h>

using namespace std;

int dv,ch,tr,n;

int main()

{

cin>>n;

dv=n%10;

ch=n/10; ch=ch%10;

tr=n/100;

cout<<dv<<endl;

cout<<ch<<endl;

cout<<tr;

return 0;

}

viet bang ngon ngu lap trinh Pascal a

uses crt;

var s:string;

ktu:char;

i,d,dem:integer;

begin

clrscr;

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

write('Nhap ki tu:'); readln(ktu);

d:=length(s);

dem:=0;

for i:=1 to d do 

  if s[i]=ktu then inc(dem);

writeln('So ki tu ',ktu,' trong xau ',s,' la: ',dem);

for i:=1 to d do 

 if s[i]=ktu then delete(s,i,1);

writeln('Xau sau khi xoa cac ki tu ',ktu,' la: ',s);

readln;

end.