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uses crt;
var i,n,s:integer;
begin
clrscr;
readln(n);
s:=0;
for i:=1 to n do
s:=s+i*i;
writeln(s);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
long long n,i,s;
int main()
{
cin>>n;
if (n%2==0)
{
s=1;
for (i=1; i<=n; i++)
if (i%2==0) s=s*i;
cout<<s;
}
else
{
s=1;
for (i=1; i<=n; i++)
if (i%2==1) s=s*i;
cout<<s;
}
return 0;
}
Uses crt;
var i,n,y: integer;
begin clrscr;
readln(n);
for i:=1 to n do s:=i*i;
Writeln(s);
readln;
end.
a)
program Tinh_S;
var
n, S: integer;
i: integer;
begin
write('Nhap gia tri cua n (30 <= n <= 90): ');
readln(n);
S := 0;
if (n >= 30) and (n <= 90) then
begin
for i := 1 to n do
S := S + i;
writeln('Gia tri cua bieu thuc S la: ', S);
end
else
writeln('Gia tri cua n khong hop le!');
readln;
end.
b)
program Tim_n;
var
n, S: integer;
begin
for n := 30 to 90 do
begin
S := 0;
for i := 1 to n do
S := S + i;
if S > 1000 then
begin
writeln('Gia tri cua n la: ', n);
break;
end;
end;
readln;
end.
a)program Tinh_S;
var n,s,i:longint;
begin
s := 0;
write('Nhap n (30 <= n <= 90): ');
readln(n);
for i := 1 to n do
begin
s := s + i;
end;
writeln('Tong S la: ', s);
end.
b) program Tim_N;
var n,s,i: longint;
begin
s := 0;
n := 1;
while s <= 1000 do
begin
s := s + n;
n := n + 1;
end;
writeln('Gia tri n can tim la: ', n-1);
end.
uses crt;
var a,b,tb:real;
begin
clrscr;
readln(a,b);
tb:=(a+b*2)/3;
writeln(tb:4:2);
if (tb>=8) then writeln('gioi')
else if ((tb>=6.5) and (tb<8)) then writeln('Kha')
else if ((tb>=5) and (tb<6.5)) then writeln('Trung Binh')
else writeln('Yeu');
readln;
end.
#include <bits/stdc++.h>
using namespace std;
double a,b,tb;
int main()
{
cin>>a>>b;
tb=(a+b*2)/3;
cout<<fixed<<setprecision(2)<<tb<<endl;
if (tb>=8.0) cout<<"Gioi";
else if ((tb>=6.5) and (tb<8)) cout<<"Kha";
else if ((tb>=5) and (tb<6.5)) cout<<"Trung binh";
else cout<"Yeu";
return 0;
}
bài 1
program: Tinh _Tong;
var: i,n:integer;S:real;
begin
writeln('nhap so n=');readln(n);
S:=0;
for i:=1 to N do S:=S+1/i*(i+2);
write('tong can tim la',S:0:2);
readln;
end.
bài 2
program:Tinh_tong_2;
var:i,n:integer;S:real;
begin
writeln('nhap so N=');
readln(n);
S:=0;
for i:=1 to N do S:=S+1/i;
writeln('tong can tim la',);
readln;
end.
(bài được làm bởi người giỏi tin nhất khối 8 trường Phạm Đình Quy.)
program 06;
Uses crt;
Var
T:real
i;n:integer;
Begin
clrscr;
write('n=1');Readln(n);
T:=06
for i:=1 to n do
T:=\frac{1}{1}.2+\frac{1}{2}.5+\frac{1}{3}.8+\frac{1}{4}.11
write('T=06'; T);
readln;
end.
program bai1;
var s:real;i,n:longint;
begin
write('N= ');readln(n);
s:=0;
for i:=1 to n do
s:=s+1/i;
write('S= ',s:4:2);
readln
end.
bn tự khai báo nhé!!!
begin
clrscr;
s:=1;
write('nhap n:');readln(n);
for i:=2 to n do
s:=s+(1/i);
writeln('tong s la:',s:4:2);
readln
end.