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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.
1:
#include <bits/stdc++.h>
using namespace std;
long long a;
int main()
{
cin>>a;
if (a%2==0) cout<<"Chan";
else cout<<"Le";
return 0;
}
1:
uses crt;
var n,i,t:integer;
begin
clrscr;
readln(n);
t:=0;
for i:=1 to n do
t:=t+i*i;
write(t);
readln;
end.
2
program bt2;
var i,n,t:integer;
begin
readln(n);
s:=0;
for i:=1 to n do
if i mod 2 = 1 then s:=s+i;
readln;
end.
Uses crt;
var n,i,s: integer;
begin clrscr;
readln(n);
for i:=1 to n do s:=s+1/i;
writeln(s);
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++)
s=s+i;
cout<<s;
return 0;
}
program Tingtongs;
uses crt;
var n,i:integer; s:longint;
begin
clrscr;
write('nhap n:'); readln(n);
for i:=1 to n do s:=s+i;
write('Tong la: ',s);
readln;
end.
Sửa đề: S=1/1+1/2+1/3+...+1/n
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/i;
writeln(s:4:2);
readln;
end.
program tong;
uses crt;
var n,i:integer;
t:longint;
begin
clrscr;
write('nhap n:'); readln(n);
t:=0;
for i:=1 to n do
t:=t+1/i;
writeln(t);
readln;
end.
Var i , x : integer;
S : real;
Begin
write (' x = '); read (x);
S:=0;
For i:=1 to x do S:= S+i;
Write (S);
Readln;
End.
program bai1;
var s,i,x:longint;
begin
write('x= ');
readln(x);
s:=1;
for i:=2 to n do
s:=s+1/i;
write('s= ',s);
readln
end.