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program ct;
uses crt;
var dem,n,s,max,t:longint;
begin
writeln('nhap n:');readln(n);
while n>0 do begin
s:=n mod 10;
t:=t+s;
if max<s then max:=s;
dem:=dem+1;
n:=n div 10;
end;
writeln('tong la',t,',','co',' ',dem,' ','chu so',',','chu so lon nhat la:',max);
readln
end.
bạn xem lại nha mik làm đây nhưng k bt đk
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: longint; chrn: string; valn,sum,max,i,preperror: byte;begin write('Nhap so can kiem tra: '); readln(n); str(n,chrn); for i:=1 to length(chrn) do begin val(chrn[i],valn,preperror); sum:=sum+valn; if max<valn then max:=valn; valn:=0 end; writeln('Ket qua: '); writeln(length(chrn)); writeln(sum); write(max); readln;end.uses crt;var n: longint; chrn: string; valn,sum,max,i,preperror: byte;begin write('Nhap so can kiem tra: '); readln(n); str(n,chrn); for i:=1 to length(chrn) do begin val(chrn[i],valn,preperror); sum:=sum+valn; if max<valn then max:=valn; valn:=0 end; writeln('Ket qua: '); writeln(length(chrn)); writeln(sum); write(max); readln;end.
Program HOC24;
var N:longint;
max,tg,t,d: integer;
Begin
write('Nhap N : '); readln(N);
max:=0;
while n<>0 do
begin
tg:=n mod 10;
d:=d+1;
t:=t+tg;
if tg>max then max:=tg;
n:=n div 10;
end;
writeln('So nguyen N co ',d,' chu so');
writeln('Tong cac chu so cua N la : ',t);
write('Chu so lon nhat cua N la :',max);
readln
end.
uses crt;
var n,d,dem,i,x,y,t:integer;
st:string;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
until (1000<=n) and (n<=9999);
if n mod 2=0 then
begin
str(n,st);
d:=length(st);
dem:=0;
for i:=1 to d do
begin
val(st[i],x,y);
if x=0 then inc(em);
end;
writeln('So chu so 0 co trong so ',n,' la: ',dem);
end
else begin
str(n,st);
t:=0;
d:=length(st);
for i:=1 to d do
begin
val(st[i],x,y);
t:=t+sqr(x);
end;
writeln('Tong binh phuong cac chu so trong so ',n,' la: ',t);
end;
readln;
end.
uses crt;
var n,d,dem,i,x,y,t:integer;
st:string;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
until (1000<=n) and (n<=9999);
if n mod 2=0 then
begin
str(n,st);
d:=length(st);
dem:=0;
for i:=1 to d do
begin
val(st[i],x,y);
if x=0 then inc(em);
end;
writeln('So chu so 0 co trong so ',n,' la: ',dem);
end
else begin
str(n,st);
t:=0;
d:=length(st);
for i:=1 to d do
begin
val(st[i],x,y);
t:=t+sqr(x);
end;
writeln('Tong binh phuong cac chu so trong so ',n,' la: ',t);
end;
readln;
end.
Tổng n số tự nhiên đầu tiên:
Var i,n,s:integer;
Begin
Write('n = ');
for i:=1 to n do
s:=s+i;
Write('Tong la ',s);
Readln
End.
Tích các số từ 5 đến 30
Var i,p:longint;
Begin
p:=1;
For i:=5 to 30 do
P:=p*i;
Write('Tich la ',p);
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.
uses crt;
var i,n,m,j,kt:integer;
begin
clrscr;
readln(n,m);
for i:=n to m do
begin
kt:=0;
if (i>2) then begin
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.
uses crt;
var n,i,d,x,j,tam:longint;
a:array[1..11]of integer;
st:string;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
until n>0;
str(n,st);
d:=length(st);
for i:=1 to d do
begin
val(st[i],a[i],x);
end;
for i:=1 to d-1 do
for j:=i+1 to d do
if a[i]<a[j] then
begin
tam:=a[i];
a[i]:=a[j];
a[j]:=tam;
end;
for i:=1 to d do
write(a[i]);
readln;
end.
uses crt;
var n:string;
i,ln,nn,t,s,x,y:integer;
begin
clrscr;
readln(n);
writeln(length(n));
ln:=0;
nn:=9;
for i:=1 to length(n) do
begin
val(n[i],x,y);
if ln<x then ln:=x;
if nn>x then nn:=x;
end;
writeln(ln);
writeln(nn);
t:=0;
s:=1;
for i:=1 to length(n) do
begin
val(n[i],x,y);
t:=t+x;
s:=s*x;
end;
writeln(t);
writeln(s);
readln;
end.