Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
#include <bits/stdc++.h>
using namespace std;
long long i,n;
double s;
int main()
{
cin>>n;
s=0;
for (i=1; i<=n; i++)
s=s+((1*1.0)/(2*(i*1.0+1*1.0)));
cout<<fixed<<setprecision(2)<<s;
return 0;
}
Bài 1:
uses crt;
var n,i:integer;
s:real;
begin
clrscr;
write('Nhap n='); readln(n);
s:=0;
for i:=1 to n do
s:=s+1/(2*i+1);
writeln(s:4:2);
readln;
end.
Bài 1:
program in_phan_tu;
uses crt;
var n,i:longint;
a:array[1..100] of longint;
begin
clrscr;
write('nhap so n:');readln(n);
for i:=1 to n do
begin
write('nhap phan tu a[',i,']:');readln(a[i]);
end;
for i:=1 to n do
write(a[i]:3);
readln;
end.
Bài 2:
program tong_phan_tu;
uses crt;
var n,i,tong:longint;
a:array[1..100] of longint;
begin
clrscr;
write('nhap so n:');readln(n);
for i:=1 to n do
begin
write('nhap phan tu a[',i,']:');readln(a[i]);
end;
tong:=0;
for i:=1 to n do
tong:=tong+a[i];
writeln('tong cua day la:');
readln;
end.
Bài 3:
program tong_phan_tu_chan;
uses crt;
var n,i,tong:longint;
a:array[1..100] of longint;
begin
clrscr;
write('nhap so n:');readln(n);
for i:=1 to n do
begin
write('nhap phan tu a[',i,']:');readln(a[i]);
end;
tong:=0;
for i:=1 to n do
if a[i] mod 2=0 then tong:=tong+a[i];
writeln('tong cua day la:');
readln;
end.
Câu 1:
uses crt;
var a:array[1..100]of integer;
i,n:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
for i:=1 to n do
write(a[i]:4);
readln;
end.
Caua1:
program caumot;
begin
writeln('lop 8A chao ban!');
end.
Câu 2:
program cauhai;
int a,b,c :real;
begin
write('a='); readln(a);
write('b='); readln(b);
c= a+b;
write('Tong hai so a b la:',c);
end.
Var a:array[1..15] of integer;
i,s:integer;
Begin
I:=1;
While i<=15 do
Begin
Write('Nhap phan tu thu ',i,' = ');readln(a[i]);
s:=s+a[i];
i:=i+1;
End;
Write('Tong la ',s);
Readln;
End.
Bài 1:
Program HOC24;
var a: array[1..1000] of integer;
i,n,d: integer;
begin
write('Nhap so phan tu: '); readln(n);
for i:=1 to n do
begin
write('Nhap so thu ',i,': '); readln(a[i]);
end;
for i:=1 to n do if (a[i]<0) and (a[i] mod 2=0) then d:=d+1;
write('Co ',d,' so nguyen am chan trong day so');
readln
end.
Bài 2:
Program HOC24;
var a: array[1..1000] of integer;
i,n: integer;
t: longint;
begin
write('Nhap so phan tu: '); readln(n);
for i:=1 to n do
begin
write('Nhap so thu ',i,': '); readln(a[i]);
end;
t:=0;
for i:=1 to n do if a[i] mod 5=0 then t:=t+a[i];
write(Tong la: ',t);
readln
end.
#include <bits/stdc++.h>
using namespace std;
long long a[1000],i,n,t;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
for (i=1; i<=n; i++) cout<<a[i]<<" ";
cout<<endl;
t=0;
for (i=1; i<=n; i++) t+=a[i];
cout<<t;
return 0;
}
program bai1;
uses crt;
var a,b,c,s: real;
begin
clrscr;
write('nhap so thu nhat ='); readln(a);
write('nhap so thu hai ='); readln(b);
write('nhap so thu ba ='); readln(c);
s:=a+b+c;
writeln('tong ba so a,b,c =',s:4:2);
readln;
end.
program bai1;
uses crt;
var n: integer;
begin
clrscr;
write('nhap so n ='); readln(n);
if n mod 2 = 0 then
writeln('la so chan ') else
writeln('la so le ');
readln;
end.
#include <bits/stdc++.h>
using namespace std;
long long s,i,n;
int main()
{
cin>>n;
s=0;
for (i=1; i<=n; i++)
if (i%2==1) s=s+i*i;
cout<<s;
return 0;
}
bn vt thành free pascal đc ko