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uses crt;
var i,n,t:integer;
begin
clrscr;
write('nhap n='); readln(n);
t:=0;
for i:=1 to n do
if i mod 2=0 then t:=t+i;
writeln(t);
readln;
end.
Câu 1:
uses crt;
var s,i,n:integer;
begin clrscr;
s:=0;
write('Nhap n: ');readln(n);
for i:=1 to n do
if i mod 2 <> 0 then inc(s,i);
write('Tong cac so le tu 1 den ',n,' la: ',s);
readln
end.
Câu 2:
uses crt;
var s,i,n:integer;
begin clrscr;
s:=0;
write('Nhap n: ');readln(n);
for i:=1 to n do
if i mod 2 = 0 then inc(s,i);
write('Tong cac so le tu 1 den ',n,' la: ',s);
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.
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.
Var i,n:integer;
s:longint;
Begin
Write('n = ');readln(n);
For i:=1 to n do
s:=s+i;
Write('Tong la ',s);
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.
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.
uses crt;
var n,i,t:integer;
begin
clrscr;
readln(n);
t:=0;
for i:=1 to n do
if i mod 2=0 then t:=t+i;
write(t);
readln;
end.
uses crt;
var i,n,t:integer;
begin
clrscr;
write('nhap n='); readln(n);
t:=0;
for i:=1 to n do
if i mod 2=1 then t:=t+i;
writeln(t);
readln;
end.