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program Tinh_Tong;
var n, s, i: integer;
begin
write('Nhap vao so nguyen duong n: ');
readln(n);
s := 0;
i := 1;
while i <= n do
begin
s := s + i;
i := i + 1;
end;
writeln('Tong cua ', n, ' so tu nhien dau tien la: ', s);
end.
program Le_Nho_Hon_Hoac_Bang_n;
uses crt;
var
n, i: integer;
begin
clrscr;
write('Nhap vao mot so nguyen duong n: ');
readln(n);
while n <= 0 do
begin
writeln('So ban nhap khong hop le. Xin vui long nhap lai: ');
readln(n);
end;
clrscr;
writeln('Cac so le nho hon hoac bang ', n, ' la:');
i := 1;
while i <= n do
begin
if i mod 2 <> 0 then
writeln(i);
i := i + 1;
end;
readln;
end.
Program HOC24;
var min,max,i,n: integer;
a: array[1..1000] of integer;
begin
write('Nhap N: '); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
max:=a[1]; min:=a[1];
for i:=2 to n do
begin
if a[i]> max then max:=a[i];
if a[i]<min then min:=a[i];
end;
writeln('Gia tri lon nhat la: ',max);
write('Gia tri nho nhat la: ',min);
readln
end.
program tim_uoc;
uses crt;
var i,n,tong:integer;
begin
clrscr;
write('nhap so n:');readln(n);
i:=1;tong:=0;
writeln('cac uoc cua ',n,' la:');
while i<=n do
if n mod i=0 then
begin
write(i:3);
inc(i);
end;
writeln;
i:=1;writeln('cac uoc chan:');
while i<=n do
begin
if n mod i=0 then
begin
if i mod 2=0 then write(i:3);
tong:=tong+i;
end;
end;
writeln;
write('tong cac uoc chan:',tong);
readln;
end.
uses crt;
var n,i,t:integer;
begin
clrscr;
write('Nhap n='); readln(n);
i:=1;
writeln('Cac uoc cua ',n,' la: ');
while i<=n do
begin
if n mod i=0 then write(i:4):
i:=i+1;
end;
writeln;
writeln('Cac uoc chan cua ',n,' la: ');
t:=0;
i:=1;
while i<=n do
begin
if (n mod i=0) then
begin
t:=t+i;
write(i:4);
end;
inc(i);
end;
writeln('Tong cac uoc chan cua ',n,' la: ',t);
readln;
end.
Cách 1 dùng lệnh for do:
Uses crt;
var i,n,k: integer;
begin clrcsr;
readln(n);
for i:=1 to n do begin
if(i mod 2=0) and (i>=10) then k:=k*i;
end;
writeln(k);
readln;
end.
Cách 2 dùng lệnh while do
Uses crt;
var m,n,o: integer;
begin clrcsr;
readln(n);
o:=1;
m:=1;
while (m<n) do begin
m:=m+1;
if(m mod 2=0) and (m>=10) then o:=o*m;
end;
writeln(o);
readln;
end.
program TimSoLonNhat;
var
a, b, c, d, max: integer;
begin
write('Nhap a: '); readln(a);
write('Nhap b: '); readln(b);
write('Nhap c: '); readln(c);
write('Nhap d: '); readln(d);
max := a;
if b > max then
max := b;
if c > max then
max := c;
if d > max then
max := d;
writeln('So lon nhat la: ', max);
readln;
end.
program TimSoLonNhat;
var a, b, c, d: integer;
begin
writeln('Nhap vao gia tri cua a: ');
readln(a);
writeln('Nhap vao gia tri cua b: ');
readln(b);
writeln('Nhap vao gia tri cua c: ');
readln(c);
writeln('Nhap vao gia tri cua d: ');
readln(d);
if (a > b) and (a > c) and (a > d) then
writeln('So lon nhat la: ', a)
else if (b > a) and (b > c) and (b > d) then
writeln('So lon nhat la: ', b)
else if (c > a) and (c > b) and (c > d) then
writeln('So lon nhat la: ', c)
else
writeln('So lon nhat la: ', d);
readln;
end.
var n, sum : integer;
begin
write('Nhap n: ');
readln(n);
sum := 0;
while n > 0 do
begin
sum := sum + n;
n := n - 1;
end;
writeln('Tong la: ', sum);
end.
uses crt;
var a:array[1..100]of integer;
i,n,max:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
max:=a[1];
for i:=1 to n do
if max<a[i] then max:=a[i];
writeln(max);
readln;
end.