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![](https://rs.olm.vn/images/avt/0.png?1311)
Câu 1:
uses crt;
var n,i,kt:integer;
begin
clrscr;
write('Nhap n='); readln(n);
if n<2 then writeln(n,' khong la so nguyen to')
else begin
kt:=0;
for i:=2 to n-1 do
if n mod i=0 then kt:=1;
if kt=0 then writeln(n,' la so nguyen to')
else writeln(n,' khong la so nguyen to');
end;
readln;
end.
Câu 2:
uses crt;
var a:array[1..100]of integer;
i,n,max,min: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];
min:=a[1];
for i:=1 to n do
begin
if max<a[i] then max:=a[i];
if min>a[i] then min:=a[i];
end;
writeln('So lon nhat la: ',max);
writeln('So nho nhat la: ',min);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
THAM KHẢO:
uses crt;
var a,cv,dt:integer;
begin
clrscr;
write('a='); readln(a);
cv:=a*4;
dt:=sqr(a);
if a>0 then
begin
writeln('chu vi hinh vuong la: ',cv);
writeln('dien tich hinh vuong la: ',dt);
end
else writeln('vui long nhap so a lon hon 0');
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
Bài 1 :
Uses crt;
Var x,y:integer;
Begin
clrscr;
Readln(x,y);
Write('Tong cua x,y la ',x+y);
Readln
End.
Bài 2 :
Uses CRT;
var x,y,z:integer; tbc:real;
begin
clrscr;
readln(x,y,z);
tbc:=(a+b+c)/3;
Write('Trung binh cong x,y,z la ',tbc:4:2);
Readln
End.
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var a:array[1..100]of integer;
n,i:integer;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
if n<=0 then writeln('Ban nhap sai, yeu cau nhap lai');
until n>0;
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
for i:=1 to n do
if a[i] mod 2=0 then write(a[i]:4);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var
a,b: integer;
begin
clrscr;
write('Nhap so thu nhat: ');readln(a);
write('Nhap so thu hai: ');readln(b);
writeln('Tong ',a,' va ',b,' la: ',a+b);
readln
end.
Câu 1:
Var
cv,s,a:integer;
begin
write('nhap vao canh hinh vuong:');readln(a);
s:=a*a;
cv:=a*4;
Writeln('chu vi hinh vuong la:',cv);
WRiteln('dien tich hinh vuong la:',s);
readln
end.
C1:
Var
a:integer;b: integer;
Begin
a:=0;
Writeln('Hay nhap nam can tinh:');
readln(b);
a:=b-2003;
if a>9 and a<20 then
writeln('Nam dang o trong tuoi vi thanh nien.')
else
writeln('Nam khong o trong tuoi vi thanh nien.');
readln;
end.
1.
program c1;
uses crt;
const namnay=2019;
namsinh=2003;
var tuoi:integer;
begin
clrscr;
tuoi:=namnay-namsinh;
if 10<=tuoi and 19>=tuoi then write('Nam o tuoi vi thanh nien ') else write('Nam khong o tuoi vi thanh nien');
readln
end.