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uses crt;
var a:array[1..100]of integer;
i,n,t,t1,t2,t3,min,max:integer;
kt:boolean;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
writeln('Day 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];
kt:=true;
for i:=2 to trunc(sqrt(t)) do
if t mod i=0 then
begin
kt:=false;
break;
end;
writeln('Tong cua day so la: ',t);
if (kt=true) and (t>1) then writeln(t,' la so nguyen to')
else writeln(t,' khong la so nguyen to');
writeln('Cac so o vi tri le cua day so la: ');
t1:=0;
for i:=1 to n do
if i mod 2=1 then
begin
write(a[i]:4);
t1:=t1+a[i];
end;
writeln;
writeln('Tong cac so o vi tri le cua day so la: ',t1);
if trunc(sqrt(t1))=sqrt(t1) then writeln(t1,' la so chinh phuong')
else writeln(t1,' khong la so chinh phuong');
writeln('Cac so o vi tri chan cua day so la: ');
t2:=0;
for i:=1 to n do
if i mod 2=0 then
begin
write(a[i]:4);
t2:=t2+a[i];
end;
writeln;
writeln('Tong cac so o vi tri chan cua day so la: ',t2);
t3:=0;
for i:=1 to t2 do
if t2 mod i=0 then t3:=t3+i;
if t3=t2 then writeln(t2,' la so hoan hao')
else writeln(t2,' khong la so hoan hao');
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 cua day la: ',max);
writeln('So nho nhat cua day la: ',min);
writeln('Tong cua so lon nhat va so nho nhat la: ',max+min);
readln;
end.
uses crt;
var a:array[1..100]of integer;
n,i,t,kt,j,t1,t2,t3,max,min:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
writeln('Day 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 cua day so vua nhap la: ',t);
kt:=0;
for i:=2 to trunc(sqrt(t)) do
if t mod i=0 then
begin
kt:=1;
break;
end;
if (kt=0) and (t>1) then writeln(t,' la so nguyen to');
else writeln(t,' khong la so nguyen to');
t1:=0;
writeln('Cac so o vi tri le cua day la: ');
for i:=1 to n do
if i mod 2=1 then
begin
write(a[i]:4);
t1:=t1+a[i];
end;
writeln;
writeln('Tong cac so o vi tri le la: ',t1);
if trunc(sqrt(t1))=sqrt(t1) then writeln(t1,' la so chinh phuong')
else writeln(t1,' khong la so chinh phuong');
t2:=0;
writeln('Cac so o vi tri chan la: ');
for i:=1 to n do
if i mod 2=0 then
begin
write(a[i]:4);
t2:=t2+a[i];
end;
writeln;
writeln('Tong cac so o vi tri chan la: ',t2);
t3:=0;
for i:=1 to t2 do
if t2 mod i=0 then t3:=t3+i;
if t3=t2 then writeln(t2,' la so hoan hao')
else writeln(t2,' khong la so hoan hao');
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('Gia tri lon nhat la: ',max);
writeln('Gia tri nho nhat la: ',min);
writeln('Tong cua hai so lon nhat va nho nhat la: ',max+min);
readln;
end.
uses crt;
var n,i,d,dem,kt,t,kt1,t1,t2,t3,max,min,x,j:integer;
a,b:array[1..100]of integer;
st:string;
begin
clrscr;
write('Nhap n='); readln(n);
str(n,st);
d:=length(st);
for i:=1 to d do
val(st[i],a[i],x);
dem:=1;
b[1]:=a[1];
for i:=1 to d do
begin
kt:=0;
for j:=1 to dem do
if a[i]=b[j] then kt:=1;
if kt=0 then
begin
inc(dem);
b[dem]:=a[i];
end;
end;
writeln('Cac chu so cua ',n,' la: ');
for i:=1 to dem do
write(b[i]:4);
writeln;
t:=0;
for i:=1 to d do
t:=t+a[i];
writeln('Tong cac chu so cua ',n,' la: ',t);
kt1:=0;
for i:=2 to trunc(sqrt(t)) do
if t mod i=0 then
begin
kt1:=1;
break;
end;
if (kt1=0) and (t>1) then writeln(t,' la so nguyen to')
else writeln(t,' khong la so nguyen to');
writeln('Cac chu so o vi tri le cua ',n,' la: ');
t1:=0;
for i:=1 to d do
if i mod 2=1 then
begin
write(a[i]:4);
t1:=t1+a[i];
end;
writeln;
writeln('Tong cac chu so o vi tri le la: ',t1);
if trunc(sqrt(t1))=sqrt(t1) then writeln(t1,' la so chinh phuong')
else writeln(t1,' khong la so chinh phuong');
writeln('Cac chu so o vi tri chan cua ',n,' la: ');
t2:=0;
for i:=1 to d do
if i mod 2=0 then
begin
write(a[i]:4);
t2:=t2+a[i];
end;
writeln('Tong cac chu so o vi tri chan la: ',t2);
t3:=0;
for i:=1 to t2 do
if t2 mod i=0 then t3:=t3+i;
if (t3=t2) and (t2>0) then writeln(t2,' la so hoan hao')
else writeln(t2,' khong la so hoan hao');
max:=a[1];
min:=a[1];
for i:=1 to d do
begin
if max<a[i] then max:=a[i];
if min>a[i] then min:=a[i];
end;
writeln('Chu so lon nhat cua ',n,' la: ',max);
writeln('Chu so nho nhat cua ',n,' la: ',min);
writeln('Tong cua chung la: ',max+min);
readln;
end.
từ bàn phím và đưa ra màn hình thông tin sau :
Mình sẽ tạm hiểu đề này là viết chương trình in ra các số nguyên tố lớn hơn hoặc bằng n nha
#include <bits/stdc++.h>
using namespace std;
int n,m,i;
//chuongtrinhcon
bool ktnt(int n)
{
if (n<2) return false;
for (int i=2; i*i<=n; i++)
if (n%i==0) return false;
return true;
}
int main()
{
cin>>n;
cout<<"Cac so nguyen to nho hon bang n thoa man yeu cau la"<<endl;
for (int i=2; i<=n; i++)
if (ktnt(i)) cout<<i<<" ";
}
uses crt;
var n,i:integer;
st:string;
begin
clrscr;
readln(n);
if n mod 4=0 then writeln('n chia het cho 4')
else writeln('n khong chia het cho 4');
str(n,st);
writeln(length(st));
for i:=length(st) downto 1 do write(st[i]);
readln;
end.
uses crt;
var i,j,kt:integer;
begin
clrscr;
for i:=100 to 1 do write(i:4);
writeln;
for i:=2 to 100 do
begin
kt:=0;
for j:=2 to trunc(sqrt(i)) do
if i mod j=0 then kt:=1;
if kt=0 then write(i:4);
end;
readln;
end.
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