program tong;
uses crt;
var M, N, S, i: integer;
begin
clrscr;
write ('Nhap M= '); readln(M);
write ('Nhap N= '); readln(N);
s : = 0;
for i := M to N do if (i mod 2 = 0) then s:= s + i;
write (T'ong cac so chan trong pham vi tu M den N = ',s);
readln;
end.

mk mới làm tổng thui nghen

Program Tong_hieu_tich_thuong;

Uses crt;

Var a:integer;

b:integer;

Begin

clrscr;

write(‘nhap so thu 1 :’);

readln(a);

writeln(‘ban vua nhap so: ‘,a);

write(‘nhap so thu hai :’);

readln(b);

writeln(‘ban vua nhap so thu 2: ‘,b);

Writeln(a,’+’,b,’=’,a+b);

Writeln(a,’-‘,b,’=’,a-b);

Writeln(a,’*’,b,’=’,a*b);

if b<>0 then 

Writeln(a,’/’,b,’=’,a/b);

readln;

End.

bạn in ra đc chx mình làm cái mới rùi đó

#include <bits/stdc++.h>

using namespace std;

long long x,y;

int main()

{

cin>>x>>y;

freopen("kq.txt","w",stdout);

cout<<x+y<<endl;

cout<<x-y<<endl;

cout<<x*y<<endl;

cout<<fixed<<setprecision(2)<<(x*1.0)/(y*1.0);

return 0;

}

Chọn D

Khai báo biến a và b thuộc kiểu Integer

Câu 1: 

uses crt;

var a,b:integer;

begin

clrscr;

readln(a,b);

write(a+b);

readln;

end.

Câu 2:

uses crt;

var a,b,c:integer;

begin

clrscr;

readln(a,b,c);

writeln(a+b-c);

readln;

end.

Câu 3: 

uses crt;

var a,b:integer;

begin

clrscr;

readln(a,b);

writeln(a-b);

readln;

end.

Câu 4: 

uses crt;

var x,y,z:integer;

begin

clrscr;

readln(x,y,z);

writeln((x+y)*z);

readln;

end.

câu 1 

program hieu_thuong;

uses crt;

var a,b,h,t:real;

begin

write('nhap so a:');readln(a);

write('nhap so b:');readln(b);

if a>=b then h:=a-b else h:=b-a;

t:=a/b;

writeln('hieu cua hai so ',a,'',b,' la ',h);

writeln('thuong cua hai so ',a,'',b,' la ',t);

readln;

end.

câu 2

program chuvi_dientich;

uses crt;

var cv,dt,d,r:real;

begin

write('nhap chieu dai d:');readln(d);

write('nhap chieu rong r:');readln(r);

cv:=( d + r ) * 2 ;

dt:= d * r ;

writeln('chu vi thua ruong la : ',cv);

writeln('dien tich thua ruong la : ',dt);

readln;

end.

uses crt;

var a:array[1..100]of integer;

i,n,t,s:integer;

begin

clrscr;

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

for i:=1 to n do

 begin

write('A[',i,']='); readln(a[i]);

end;

t:=0;

s:=1;

for i:=1 to n do 

begin

t:=t+a[i];

s:=s*a[i];

end;

writeln('Tong la: ',t);

writeln('Tich la: ',s);

readln;

end.

Used crt;

Var a,b;

Begin

Clrscr;

Writeln(‘Nhap a:’);Readln(a);

Write(‘Nhap b:’);Readln(b);

Clrscr;

Writeln(‘Tong la:’,a+b);

If m>n then writeln(‘Hieu la:’,a-b) else writeln(‘Hieu la:’,b-a);

Writeln(‘Tich la:’,a*b);

If n<>0 then write(‘Thuong la:’,a:b) else if m<>0 then write(‘Thuong la:’,b:a) else write(‘ Ko tinh dc’);

Readln;

End.

Học rnha

#include <bits/stdc++.h>

using namespace std;

long long a,b;

int main()

{

cin>>a>>b;

cout<<a+b<<endl;

cout<<a-b;

return 0;

}