uses crt;

begin

clrscr;

writeln(2/7:4:2);

writeln(2/7+(46 mod 5):4:2);

writeln(18 div 3);

readln;

end.

giúp với chỉ có 10 phút ò:(

Câu 1:

Program HOC24;

var i,p: integer;

t: longint;

begin

write('Nhap P: '); readln(p);

t:=0;

for i:=1 to p do if i mod 2<>0 then t:=t+i;

write('Tong cac so le la: ',t);

readln

end.

Câu 2:

Program HOC24;

var i,n: integer;

t: longint;

begin

write('Nhap N: '); readln(n);

t:=0;

for i:=1 to n do if i mod 2=0 then t:=t+i;

write('Tong cac so chan la: ',t);

readln

end.

Câu 3:

Program HOC24;

var i,t,n: integer;

begin

write('Nhap N: '); readln(n);

t:=0;

for i:=1 to n do if n mod i=0 then t:=t+i;

write('Tong cac uoc cua ',n,' la: ',t);

readln

end.

Mình dùng C++ nên div = /; mod = % nha bn!

#include <bits/stdc++.h>
using namespace std;
int main() {
int a, S;
cin >> a;
S=0;
while(a>0)
{
    S+=a%10, a=a/10;
}
cout << S << endl;
return 0;
}

Chúc bn học tốt!

c1: 

#include <bits/stdc++.h>

using namespace std;

long long i,n,s;

int main()

{

cin>>n;

s=1;

for (i=1; i<=n; i++) s=s*i;

cout<<s;

return 0;

}

Câu 2: 

#include <bits/stdc++.h>

using namespace std;

long long i,n,s;

int main()

{

cin>>n;

s=1;

for (i=1; i<=n; i++) if (i%2==0) s=s*i;

cout<<s;

return 0;

}

1:

uses crt;

var t,x,i,n:integer;

begin

clrscr;

t:=0;

n:=10;

for i:=1 to n do

begin

readln(x);

t:=t+x;

end;

write(t);

readln;

end.

2: 

uses crt;

var dem,x,i,n:integer;

begin

clrscr;

dem:=0;

n:=10;

for i:=1 to n do

begin

readln(x);

if x mod 2=0 then inc(dem);

end;

write(dem);

readln;

end.

3

program Cacsole;
uses crt;
var M, N, i: integer;
begin
clrscr;
write ('Nhap M= '); readln(M);
write ('Nhap N= '); readln(N);
for i := M to N do

if  i mod 2 = 1 then
write (i,' ');
readln;
end.

Câu 2:

Program nii;

Uses crt;

Var a,b,c,A:integer;

Begin

Write ('nhap a');

Readln (a);

Write ('nhap b');

Readln (b);

Write ('nhap c');

Readln (c);

A:=a;

If A<b then A:=b;

If A<c then A:=c;

Write ('Ket qua',A);

Readln;

End.

Câu 1

Program ntg;

Uses crt;

Var A,x,y:integer;

Begin

Write ('nhap x');

Readln (x);

Write ('nhap y');

Readln ('y');

A:=x+y;

Write ('Ket qua',A);

Readln;

End.

Câu 2: 

uses crt;

var a,b,c,max:integer;

begin

clrscr;

write('Nhap a='); readln(a);

write('Nhap b='); readln(b);

write('Nhap c='); readln(c);

max:=a;

if max<b then max:=b;

if max<c then max:=c;

writeln('So lon nhat trong 3 so la: ',max);

readln;

end.

Bài 1:

#include <bits/stdc++.h>

using namespace std;

long long x,n,i,t;

int main()

{

cin>>n;

t=0;

for (i=1; i<=n; i++)

{

cin>>x;

if ((x<0) and (x%2!=0)) t=t+x;

}

cout<<t;

return 0;

}

giúp em với

Câu 3:

program cauba;

int chieudai, chieurong, chuvi, dientich :real;

begin

write('Chieu dai la: '); Readln(chieudai);

write('Chieu rong la: '); Readln(chieurong);

chuvi = (chieudai + chieu rong)*2;

dientich= chieudai*chieurong;

writeln('Chu vi la: ',chuvi);

writeln('Dien tich la: ',dientich);

end.

Caua1:

program caumot;

begin

writeln('lop 8A chao ban!');

end.

Câu 2:

program cauhai;

int a,b,c :real;

begin

write('a='); readln(a);

write('b='); readln(b);

c= a+b;

write('Tong hai so a b la:',c);

end.