Giúp e viết ct tính tổng các bước của N sử dụng while do
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program TimMinMaxTrungBinh;
var
N, i, max, min, sum: integer;
a: array[1..50] of integer;
TB, minTB, maxTB: real;
begin
writeln('Nhap so nguyen duong N:');
readln(N);
sum := 0;
for i := 1 to N do
begin
write('Nhap so thu ', i, ': ');
readln(a[i]);
sum := sum + 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;
TB := sum / N;
minTB := TB;
maxTB := TB;
for i := 1 to N do
begin
if (a[i] < TB) and (a[i] < minTB) then
minTB := a[i];
if (a[i] > TB) and (a[i] > maxTB) then
maxTB := a[i];
end;
writeln('Gia tri lon nhat la: ', max);
writeln('Gia tri nho nhat la: ', min);
writeln('Gia tri trung binh la: ', TB:2:2);
if minTB = TB then
writeln('Khong co gia tri nao nho hon TB')
else
writeln('Gia tri nho nhat < TB la: ', minTB);
if maxTB = TB then
writeln('Khong co gia tri nao lon hon TB')
else
writeln('Gia tri lon nhat > TB la: ', maxTB);
readln;
end.
program TongCacSoChiaHetChoBa;
var
n, i, sum: integer;
begin
repeat
Write('Nhap so nguyen n (3 <= n <= 50): ');
Readln(n);
until (n >= 3) and (n <= 50);
sum := 0;
for i := 3 to n do
begin
if i mod 3 = 0 then
sum := sum + i;
end;
WriteLn('Tong cac so chia het cho 3 trong khoang tu 3 den ', n, ': ', sum);
ReadLn;
end.
program TinhTongChiaHetChoBa;
var
N, i, Tong: integer;
begin
writeln('Nhap so nguyen duong N (3 <= N <= 50):');
readln(N);
if (N < 3) or (N > 50) then
begin
writeln('N khong hop le!');
readln;
exit;
end;
Tong := 0;
i := 3;
while i <= N do
begin
if i mod 3 = 0 then
begin
Tong := Tong + i;
end;
i := i + 1;
end;
writeln('Tong cac so tu 3 den ', N, ' chia het cho 3 la: ', Tong);
readln;
end.
program TinhTongTich;
var
N, i, Tong, Tich:integer;
begin
writeln('Nhap so nguyen duong N:');
readln(N);
i:=1;
Tong:=0;
Tich:=1;
while i<=N do
begin
Tong:=Tong+i;
Tich:=Tich*i;
i:=i+1;
end;
writeln('Tong cac so tu 1 den ', N, ' la: ', Tong);
writeln('Tich cac so tu 1 den ', N, ' la: ', Tich);
readln;
end.
program HienThiSoChan;
var
N, i: integer;
A: array[1..50] of integer;
begin
writeln('Nhap so nguyen duong N:');
readln(N);
writeln('Nhap day so A gom ', N, ' phan tu:');
for i := 1 to N do
begin
readln(A[i]);
if A[i] mod 2 = 0 then
begin
writeln('Phan tu thu ', i, ' la so chan: ', A[i]);
end;
end;
readln;
end.
từ 1 đến N
program TinhTong;
var
N, Tong, Buoc: Integer;
begin
write('N: ');
readln(N);
Tong := 0;
Buoc := 1;
while Buoc <= N do
begin
Tong := Tong + Buoc;
Buoc := Buoc + 1;
end;
writeln('Tong cac buoc tu 1 den ', N, ' la: ', Tong);
readln;
end.
Gđ