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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.
Câu 1:
program Tinhtong:
var
n, i, sum: integer;
begin
write('Nhap n: ');
readln(n);
sum := 0;
for i := 2 to n do
begin
if i mod 2 = 0 then
begin
sum := sum + i;
end;
end;
writeln('Tong cac so chan tu 2 toi ', n, ' la ', sum);
readln;
end.
Câu 2:
program Tinhtong:
var
n, i, sum: integer;
begin
write('Nhap n: ');
readln(n);
sum := 0;
for i := 1 to n do
begin
if i mod 2 = 1 then
begin
sum := sum + i;
end;
end;
writeln('Tong cac so le tu 1 toi ', n, ' la ', sum);
readln;
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 :)
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.
Câu 6:
uses crt;
var n,i:integer;
begin
clrscr;
readln(n);
for i:=1 to n do
if n mod i=0 then write(i:4);
readln;
end.
5:
uses crt;
var n,i,dem:integer;
begin
clrscr;
readln(n);
dem:=0;
for i:=0 to n do
if i mod 2=1 then
begin
write(i:4);
dem:=dem+1;
end;
writeln;
writeln(dem);
readln;
end.
Uses crt;
Var i,t,n:integer;
Begin
Clrscr;
Write('n='); readln(n);
T:=0;
For i:=1 to 2*n do
If i mod 2=1 then t:=t+i;
Writeln(t);
Readln;
End.
Program HOC24;
var i,n: integer;
S: longint;
begin
write('Nhap N: '); readln(n);
i:=1; s:=0;
while i<=n do
begin
s:=s+i;
i:=i+2;
end;
write('S=',S);
readln
end.
program tinh_tong_S;
var
n, i, S: integer;
begin
write('Nhap n: ');
readln(n);
S := 0;
i := 1;
while i <= n do
begin
S := S + i;
i := i + 2;
end;
writeln('Tong S la: ', S);
readln;
end.
program tinhtong;
var n,i : integer;
S : real;
begin
write('Nhap n: ');
readln(n);
i:=1;
S:=0;
while i<=n do
begin
S:=S+1/i;
i:=i+1;
end;
writeln('Tong S= ',S);
readln;
end.
program tinh_tong_S;
var
n, i: integer;
S: real;
begin
write('Nhap n: ');
readln(n);
S := 0;
i := 1;
while i <= n do
begin
S := S + 1 / i;
i := i + 1;
end;
writeln('Tong S la: ', S:0:2);
readln;
end.
uses crt;
var n,i,t:integer;
begin
clrscr;
readln(n);
t:=0;
for i:=1 to n do
t:=t+2*i-1;
writeln(t);
readln;
end.