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![](https://rs.olm.vn/images/avt/0.png?1311)
program InChuCai;
var ch: char;
begin
for ch := 'a' to 'z' do
writeln(ch);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var a,b,x,y:integer;
//chuongtrinhcon
function ucln(var a,b:integer):integer;
var r:integer;
begin
while b>0 do
begin
r:=a mod b;
a:=b;
b:=r;
end;
ucln:=a;
end;
//chuongtrinhchinh
begin
clrscr;
readln(a,b);
x:=a;
y:=b;
if (x>0) and (y>0) then writeln(x div ucln(a,b),' ',y div ucln(a,b));
if (x<0) and (y<0) then
begin
x:=abs(x);
y:=abs(y);
a:=abs(a);
b:=abs(b);
writeln(x div ucln(a,b),' ',y div ucln(a,b));
end;
if (x<0) and (y>0) then
begin
write('-');
x:=abs(x);
y:=abs(y);
a:=abs(a);
b:=abs(b);
writeln(x div ucln(a,b),' ',y div ucln(a,b));
end;
if (x>0) and (y<0) then
begin
write('-');
x:=abs(x);
y:=abs(y);
a:=abs(a);
b:=abs(b);
writeln(x div ucln(a,b),' ',y div ucln(a,b));
end;
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
1 là bn sửa hình nền
2 là mk gọi admin hoặc giáo viên khác khoá nick bn
![](https://rs.olm.vn/images/avt/0.png?1311)
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.
![](https://rs.olm.vn/images/avt/0.png?1311)
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.
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var a,b,x,y:integer;
//chuongtrinhcon
function ucln(var a,b:integer):integer;
var r:integer;
begin
while b>0 do
begin
r:=a mod b;
a:=b;
b:=r;
end;
ucln:=a;
end;
//chuongtrinhchinh
begin
clrscr;
readln(a,b);
x:=a;
y:=b;
if (x>0) and (y>0) then writeln(x div ucln(a,b),' ',y div ucln(a,b));
if (x<0) and (y<0) then
begin
x:=abs(x);
y:=abs(y);
a:=abs(a);
b:=abs(b);
writeln(x div ucln(a,b),' ',y div ucln(a,b));
end;
if (x<0) and (y>0) then
begin
write('-');
x:=abs(x);
y:=abs(y);
a:=abs(a);
b:=abs(b);
writeln(x div ucln(a,b),' ',y div ucln(a,b));
end;
if (x>0) and (y<0) then
begin
write('-');
x:=abs(x);
y:=abs(y);
a:=abs(a);
b:=abs(b);
writeln(x div ucln(a,b),' ',y div ucln(a,b));
end;
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var a,b,x,y:integer;
//chuongtrinhcon
function ucln(var a,b:integer):integer;
var r:integer;
begin
while b>0 do
begin
r:=a mod b;
a:=b;
b:=r;
end;
ucln:=a;
end;
//chuongtrinhchinh
begin
clrscr;
readln(a,b);
x:=a;
y:=b;
if (x>0) and (y>0) then writeln(x div ucln(a,b),' ',y div ucln(a,b));
if (x<0) and (y<0) then
begin
x:=abs(x);
y:=abs(y);
a:=abs(a);
b:=abs(b);
writeln(x div ucln(a,b),' ',y div ucln(a,b));
end;
if (x<0) and (y>0) then
begin
write('-');
x:=abs(x);
y:=abs(y);
a:=abs(a);
b:=abs(b);
writeln(x div ucln(a,b),' ',y div ucln(a,b));
end;
if (x>0) and (y<0) then
begin
write('-');
x:=abs(x);
y:=abs(y);
a:=abs(a);
b:=abs(b);
writeln(x div ucln(a,b),' ',y div ucln(a,b));
end;
readln;
end.