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uses crt;
var n,i,s:integer;
begin
clrscr;
write('Nhap n='); readln(n);
s:=0;
i:=1;
while i<=n do
begin
s:=s+i;
inc(i);
end;
writeln(s);
readln;
end.
Var i, n, S: integer;
Begin
Read(n);
S:=0;
If i mod 2 = 0 then while i:=1 to n do S:=S+i;
Write (S);
Readln;
End.
Ko bt đúng ko :)
#include <bits/stdc++.h>
using namespace std;
long long n,i,t;
int main()
{
cin>>n;
t=0;
for (i=1; i<=n; i++)
if (i%2==0) t+=i;
cout<<t;
return 0;
}
Program HOC24;
Uses crt;
var i,j: integer;
j:=1; i:=0;
while(j<=50) do
begin
j:=j+1;
if(j mod 2=0) then i:=i+j;
end;
writeln(i);
readln;
end.
Bài 1:
uses crt;
var n,i:integer;
s:real;
begin
clrscr;
write('Nhap n='); readln(n);
s:=1;
for i:=1 to n do
s:=s*i;
writeln(n,'!=',s:0:0);
readln;
end.
1).
program oken;
uses crt;
var n,i: integer;
gt: qword;
begin
write('nhap n: '): readln(n);
gt:=1;
for i:=1 to n do gt:=gt*i;
writeln('N!=',gt);
readln;
end.
2).
program tongcacsole;
uses crt;
var t,i:longint;
begin
clrscr;
for i:=1 to 203 do
if i mod 2 = 1 then t:=t+i;
write(t);
end.
3).
program tongcacsochan;
uses crt;
var t,i:longint;
begin
clrscr;
for i:=1 to 20 do
if i mod 2 = 0 then t:=t+i;
write(t);
end.
Var i, n, S: integer;
Begin
Read(n);
S:=0;
If i mod 2 = 1 then while i:=1 to n do S:=S+i;
Write (S);
Readln;
End.
Ko bt đúng ko :)
tham khảo
uses crt;
var i,t:integer;
begin
clrscr;
t:=0;
for i:=1 to 10 do
t:=t+i;
writeln('Tong cac so tu nhien tu 1 toi 10 la: ',t);
readln;
end.
refer
uses crt;
var i: integer;
begin
clrscr;
for i:= 1 to 10 do
begin writeln ( ' O ' ) end;
readln
end.
uses crt;
var n,i,t,x:integer;
begin
clrscr;
readln(n);
t:=0;
while n>0 do
begin
x:=n mod 10;
if x mod 2=0 then t:=t+x;
n:=n div 10;
end;
writeln(t);
readln;
end.
Tham khảo:
Program BTH;
uses crt;
var i,n,s:longint;
Begin
clrscr;
write('Nhap n: ');readln(n);
i:=1;
While i<>n do
Begin
If i mod 2=0 then s:=s+i;
i:=i+1;
end;
writeln('Tong day so tren la: ',s);
readln;
end.
program tinh_tong_chan;
uses crt;
Var i,N,S: integer;
begin
clrscr;
writeln('nhap so n');
readln(N);
S:=0;
i:=1;
while i <= N do
begin
S:=S+i;
i:=i+1;
end;
Writeln('tong la: ',S);
readln;
end.
đây bạn nha