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var i,n:integer;
begin
write('n = ');readln(n);
i:=2;
while n mod i <> 0 do i:=i+1;
if i = n then write(n,' la so nguyen to')
else write(n,' khong la so nguyen to');
readln
end.
Uses crt;
var i,n,p: integer;
begin clrscr;
readln(n);
for i:=1 to n do if(n mod i=0) then p:=p+1;
if(p=2) then writeln(n,' la so nguyen to')
else writeln(n,' khong phai la so nguyen to');
readln;
end.
1:
uses crt;
var n,t,i,j,kt:integer;
begin
clrscr;
write('nhap n='); readln(n);
if n>=2 then
begin
kt:=0;
for i:=2 to trunc(sqrt(n)) 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
else writeln(n,' khong la so nguyen to');
writeln('cac so nguyen to trong khoang tu 2 toi ',n,' la: ');
t:=0;
for i:=2 to n do
begin
kt:=0;
for j:=2 to i-1 do
if i mod j=0 then kt:=1;
if kt=0 then
begin
write(i:4);
t:=t+i;
end;
end;
writeln;
writeln('tong cac so nguyen to trong khoang tu 2 toi ',n,' la: ',t);
readln;
end.
1 không
2
Program UCLN;
uses crt;
var a,b : integer;
begin
write ('nhap so a la ');readln (a);
write ('nhap so b la ');readln (b);
while a < > b do
if a >b then a := a - b else b := b - a ;
write ( ' UCLN la :' , a );
readln
end.
1:
#include <bits/stdc++.h>
using namespace std;
int n,i;
bool kt;
int main()
{
cin>>n;
kt=true;
for (i=2; i*i<=n; i++)
if (n%i==0) kt=false;
if (kt==true && n>1) cout<<"La so nguyen to";
else cout<<"Khong la so nguyen to";
return 0;
}
program TinhTongVaUocSo;
var
a, b, tong, i: integer;
laSoNguyenTo: boolean;
begin
write('Nhap a: ');
readln(a);
write('Nhap b: ');
readln(b);
tong := a + b;
writeln('Tong cua a va b la: ', tong);
writeln('Uoc so cua tong la:');
for i := 1 to tong do
begin
if tong mod i = 0 then
writeln(i);
end;
laSoNguyenTo := true;
if tong < 2 then
laSoNguyenTo := false
else
for i := 2 to trunc(sqrt(tong)) do
if tong mod i = 0 then
begin
laSoNguyenTo := false;
break;
end;
if laSoNguyenTo then
writeln('Tong a va b la so nguyen to')
else
writeln('Tong a va b khong phai la so nguyen to');
readln;
end.
program TinhTongVaUocCuaTong;
var a, b, tong, i: integer;
SoNguyenTo: boolean;
begin
writeln('Nhap vao hai so a va b (a > 0, b > 0): ');
write('a = ');
readln(a);
write('b = ');
readln(b);
tong := a + b;
writeln('Tong cua a + b = ', tong);
writeln('Uoc cua tong a + b: ');
for i := 1 to tong do
begin
if tong mod i = 0 then
writeln(i);
end;
SoNguyenTo := true;
if tong < 2 then
SoNguyenTo := false
else
for i := 2 to trunc(sqrt(tong)) do
begin
if tong mod i = 0 then
begin
SoNguyenTo := false;
break;
end;
end;
if SoNguyenTo then
writeln('Tong a + b la so nguyen to:')
else
writeln('Tong a + b khong phai la so nguyen to:');
end.
program TinhTongVaUoc;
var
a, b, sum, i: integer;
uoc: boolean;
begin
write('Nhap so a: ');
readln(a);
write('Nhap so b: ');
readln(b);
// Tinh tong a+b
sum := a + b;
writeln('Tong cua a va b la: ', sum);
// In ra cac uoc cua tong
write('Cac uoc cua tong a+b la: ');
for i := 1 to sum do
begin
if sum mod i = 0 then
write(i, ' ');
end;
writeln;
// Kiem tra xem tong a+b co phai la so hoan hao hay khong
uoc := false;
for i := 1 to sum - 1 do
begin
if sum mod i = 0 then
uoc := true;
end;
if uoc and (sum = 2 * sum div 2) then
writeln('Tong a+b la so hoan hao')
else
writeln('Tong a+b khong phai la so hoan hao');
end.
2:
#include <bits/stdc++.h>
using namespace std;
int main()
{
int n,i,kt=0;
cin>>n;
for (int i=2; i*i<=n; i++)
if (n%i==0) kt=1;
if (kt==0) cout<<"YES";
else cout<<"NO";
}
Câu 58:
Var n:integer;
Begin
Write('n = ');readln(n);
If n mod 2 <> 0 then write(n,' la so le')
Else write(n,' khong la so le');
Readln
End.
Câu 61:
Var n:integer;
Begin
Write('n = ');readln(n);
If n mod 2 = 0 then write(n,' la so chan')
Else write(n,' khong la so chan');
Readln
End.
1: VCT pascal kiểm tra số n có phải là số nguyên tố không
uses crt;
var n,i,kt:integer;
begin
clrscr;
repeat
write('nhap n='); readln(n);
if n<=1 then writeln('ban da nhap sai,yeu cau ban nhap lai');
until n>1;
kt:=0;
for i:=2 to n-1 do
if n mod i=0 then
begin
kt:=1;
break;
end;
if kt=0 then writeln(n,' la so nguyen to')
else writeln(n,' khong la so nguyen to');
readln;
end.
2:VCT pascal kiểm tra số n có phải là số hoàn hảo không
uses crt;
var n,i,t:integer;
begin
clrscr;
write('nhap n:'); readln(n);
t:=0;
for i:=1 to n-1 do
if n mod i=0 then begin
t:=t+i;
end;
if t=n then writeln(n,' la so hoan hao')
else write(n,' khong la so hoan hao');
readln;
end.
3:VCT pascal kiểm tra số n xuất ra màn hình các số nguyên tố từ 2 đến n
uses crt;
var n,i,kt,j:integer;
begin
clrscr;
repeat
write('nhap n='); readln(n);
if n<=2 then writeln('ban da nhap sai, yeu cau ban nhap lai');
until n>2;
writeln('day cac so nguyen to trong khoang tu 2 toi ',n,' la:');
for i:=2 to n do
begin
kt:=0;
for j:=2 to i-1 do
if i mod j=0 then kt:=1;
if kt=0 then write(i:4);
end;
readln;
end.
bạn ơi bạn có thể giúp mình gộp 3 ý thành 1 bài ko