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Tham khảo:
program tim_uoc;
uses crt;
var n,i:integer;
begin
clrscr;
write('Nhap n: ');readln(n);
if (n<0) then
begin
writeln('So nhap vao khong thoa man.');
write('Nhap lai n: ');readln(n);
end;
writeln('Cac uoc so cua ',n,' tu 1 den ',n,' la: ');
for i:=1 to n do
if ( (n mod i) = 0 ) then write(i,' ');
readln;
end.
program TongUoc;
uses crt;
var
N, i, Tong: integer;
begin
clrscr;
Tong := 0;
write('Nhap so tu nhien N: ');
readln(N);
// Tinh tong cac uoc cua N
for i := 1 to N do
begin
if N mod i = 0 then
begin
Tong := Tong + i;
end;
end;
writeln('Tong cac uoc cua ', N, ' la: ', Tong);
readln;
end.
c1:
#include <bits/stdc++.h>
using namespace std;
long long i,n,s;
int main()
{
cin>>n;
s=1;
for (i=1; i<=n; i++) s=s*i;
cout<<s;
return 0;
}
Câu 2:
#include <bits/stdc++.h>
using namespace std;
long long i,n,s;
int main()
{
cin>>n;
s=1;
for (i=1; i<=n; i++) if (i%2==0) s=s*i;
cout<<s;
return 0;
}
program bai_1;
uses crt;
var i,n,j,d,dem:word;
begin
clrscr;
repeat
write('nhap n:');readln(n);
if (n<=0)or(n>=10000)then writeln('so ban nhap khong hop le, ban hay nhap lai:');
until (n>0)and(n<10000);
writeln('cac uoc so la so tu nhien cua ',n,' la:');
for i:=1 to n do
if n mod i=0 then write(i,' ');
writeln;
dem:=0;
for i:=2 to n do
begin
d:=0;
for j:=2 to i div 2 do
if i mod j=0 then inc(d);
if (d=0)and(n mod i=0)then inc(dem);
end;
if dem>0 then writeln('cac uoc so la so nguyen to cua ',n,' la:');
begin
d:=0;
for j:=2 to i div 2 do
if i mod j=0 then inc(d);
if (d=0)and(n mod i=0)then write(i,' ');
end;
if dem=0 then write(0);
readln;
end.
a)
uses crt;
var i,n:integer;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
until n<100;
if n mod 2=0 then
begin
for i:=0 to n do
if i mod 2=0 then write(i:4);
end
else writeln(n,' khong la so chan');
readln;
end.
b)
uses crt;
var i,n:integer;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
until n<100;
if n mod 2=1 then
begin
for i:=1 to n do
if i mod 2=1 then write(i:4);
end
else writeln(n,' khong la so le');
readln;
end.
Câu 3:
Var i,n:integer:
Begin
Write('n = ');readln(n);
Write('Cac uoc cua n la ');
For i:=1 to n do
If n mod i = 0 then write(i:8);
Readln
End.
Câu 4
Var i,n:integer:
Begin
Write('n = ');readln(n);
Write('Cac so le nho hon n la ');
For i:=1 to n - 1 do
If i mod 2 <> 0 then write(i:8);
Readln
End.
#include <bits/stdc++.h>
using namespace std;
long long i,n,dem;
int main()
{
cin>>n;
dem=0;
for (i=1; i<=n; i++)
if (n%i==0)
{
cout<<i<<" ";
dem++;
}
cout<<endl;
cout<<dem;
return 0;
}
uses crt;
var n,i:integer;
begin
clrscr;
readln(n);
for i:=1 to n do
if n mod i=0 then write(i:4);
readln;
end.