uses crt;

var a,b:real;

begin

clrscr;

readln(a,b);

writeln(a+b:4:1);

readln;

end.

program b1;

uses crt;

var a,b,s:real;

begin

clrscr;

writeln('Nhap hai so a va b: ');

readln(a,b);

s:=a+b;

write('Tong cua hai so a va b la: ',s:1:1);

readln;

end.

P/S: phần lưu lẫn đặt tên người dùng nào cũng đều làm được.
+ Chọn Save as ở phần File phía góc trái trên cùng rồi đặt tên.

uses crt;

var a:array[1..50]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);

readln;

end.

uses crt;

var a:array[1..50]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);

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.

uses crt;
var a: array[1..100] of integer;
i,n,s,s1,s2,s3: integer;
begin
clrscr;
writeln(' nhap so phan tu cua day'); readln(n);

for i:=1 to n do
begin
writeln('a[',i,']'); readln(a[i]);
end;
write('day vua nhap la:');
s:=0;
for i:=1 to n do
begin
write(a[i],' ');
s:=s+a[i];
if a[i] mod 2=0 then s1:=s1+a[i];
if a[i] mod 2<>0 then s2:=s2+a[i];
if a[i] mod 3=0 then s3:=s3+a[i];
end;
writeln;
writeln('tong bang:',s);
writeln('tong chan:',s1);
writeln('tong le:',s2);
writeln('tong chia het cho 3:',s3);
readln
end.

uses crt;

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

i,n,t,kt,j:integer;

begin

clrscr;

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

for i:=1 to n do

begin

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

end;

writeln('Cac so vua nhap la: ');

for i:=1 to n do 

  write(a[i]:4);

writeln;

t:=0;

for i:=1 to n do 

  t:=t+a[i];

writeln('Tong cua day so la: ',t);

kt:=0;

for j:=2 to trunc(sqrt(t)) do 

  if t mod j=0 then 

    begin

kt:=1;

break;

end;

if kt=0 then writeln(t,' la so nguyen to')

else writeln(t,' khong la so nguyen to');

readln;

end.

Cậu ơi sai khúc write('A[',i,']='); readln(a[i]); rồi nó cứ bị sao sao á

uses crt;

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

i,n,t,kt:integer;

begin

clrscr;

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

for i:=1 to n do

begin

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

end;

writeln('Cac so ban vua nhap la: ');

for i:=1 to n do 

write(a[i]:4);

writeln;

t:=0;

for i:=1 to n do

t:=t+a[i];

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

if t>=2 then 

begin

kt:=0;

for i:=2 to trunc(sqrt(t)) do 

  if t mod i=0 then 

begin

kt:=1;

break;

end;

 if kt=0 then writeln(t,' la so nguyen to')

else writeln(t,' khong la so nguyen to');

end

else writeln(t,' khong la so nguyen to');

readln;

end.