Câu 1:

Uses crt;

Var a,b:real;

Begin

Clrscr;

Readln(a);

Readln(b);

Writeln((a+b)/(a-b));

Readln

End.

Câu 2:

Uses crt;

Var a,b,c:real;

Begin

Clrscr;

Readln(a);

Readln(b);

Readln(c);

Writeln(a*a+b*b+c*c);

Readln

End.

Câu 5:

Uses crt;

Var a,b,c,d:real;

Begin

Clrscr;

Readln(a);

Readln(b);

Readln(c);

Readln(d);

Writeln((a+b+c+d)/4);

Readln

End.

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 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.

program a_mod_b;

uses crt;

var a,b:integer;

begin 

clrscr;

write('nhap gia tri cua a: ');readln(a);

write('nhap gia tri cua b: ');readln(b);
write('ket qua la: ',a mod b);

readln;

end.

#include <bits/stdc++.h>

using namespace std;

int a,b;

int main()

{

cin>>a>>b;

cout<<(a/b)+(a%b);

return 0;

}

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.

Câu 1:

uses crt;

var a,b,c,p,s:real;

begin

clrscr;

repeat

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

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

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

until (a>0) and (b>0) and (c>0);

if (a+b>c) and (a+c>b) and (b+c>a) then 

   begin

        p:=(a+b+c)/2;

s:=sqrt(p*(p-a)*(p-b)*(p-c));

writeln('Dien tich tam giac la: ',s:4:2);

end

else writeln('Day khong la ba canh trong mot tam giac');

readln;

end.

Câu 2: 

uses crt;

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

i,n,t,max,min:integer;

begin

clrscr;

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

for i:=1 to n do 

  begin

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

end;

t:=0;

for i:=1 to n do 

  t:=t+a[i];

writeln('Tong cac phan tu trong day la: ',t);

max:=a[1];

min:=a[1];

for i:=1 to n do 

  begin

     if max<a[i] then max:=a[i];

if min>a[i] then min:=a[i];

end;

writeln('Gia tri lon nhat la: ',max);

writeln('Gia tri nho nhat la: ',min);

readln;

end. 

C1:

khai báo:

      program  hieu_a_va_b   ("tự đặt tên cái này ko cần thiết)

      uses crt;

      var a, b : integer

phần thân:

       begin

            writeln ("nhap so a");  read(a);

            writeln ("nhap so b");  read(b);

             writeln ("hieu cua hai so la: a - b=" , a - b);

        end.

C2:

khai báo:

      program    tinh_ba_so

      uses crt;

      var a, b, c : integer

phần thân:

       begin

            writeln ("nhap so a");  read(a);

            writeln ("nhap so b");  read(b);

            writeln ("nhap so c");  read(c);

             writeln ("ket qua cua phep tinh a+b-c la" , a+b-c);

        end.

C3:

khai báo:

      program    tinh_ba_so

      uses crt;

      var x, y, z : integer

phần thân:

       begin

            writeln ("nhap so x");  read(x);

            writeln ("nhap so y");  read(y);

            writeln ("nhap so z");  read(z);

             writeln ("ket qua cua phep tinh (x+y)*z la") , (x+y)*z);

        end.

nhớ chạy thử chương trình nha. xem có lỗi ko.

(nhớ tick cho mk nha)

Câu 2: 

#include <bits/stdc++.h>

using namespace std;

long long a,b;

int main()

{

cin>>a>>b;

cout<<a-b;

return 0;

}