Tìm số lớn nhất

= MAX ( a,b,c)

Tìm số nhỏ nhất

= MIN ( a,b,c)

uses crt;

var a,b:integer;

begin

clrscr;

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

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

if a>b then writeln('So lon nhat trong hai so la: ',a);

if b>a then writeln('So lon nhat trong hai so la: ',b);

if a=b then writeln('Hai so bang nhau');

readln;

end.

 Viết chương trình cho phép người dùng nhập 1 số nguyên từ bàn phím, chương trình sẽ cho biết số đó là số chẵn hay lẻ.

Bài 1:

uses crt;

var n,i,s:integer;

begin

clrscr;

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

s:=0;

for i:=1 to n do 

 if i mod 6=0 then s:=s+i;

writeln(s);

readln;

end.

Bài 2: 

uses crt;

var a,b,c,ucln,i:integer;

begin

clrscr;

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

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

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

while a<>b do 

  begin

if a>b then a:=a-b

else b:=b-a;

end;

ucln:=a;

while ucln<>c do 

 begin

if ucln>c then ucln:=ucln-c

else c:=c-ucln;

end;

writeln(ucln);

readln;

end.

Scratch hay java

#include <bits/stdc++.h>

using namespace std;

long long a,b;

int main()

{

cin>>a>>b;

cout<<max(a,b);

return 0;

}

Var a,b:integer;

Begin

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

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

If a > b then write('so lon nhat la ',a)

Else if b > a then write('so lon nhat la ',b)

Else write('khong co so lon nhat');

Readln;

End.

#include <bits/stdc++.h>

using namespace std;

long long a,b,c,ln;

int main()

{

cin>>a>>b>>c;

ln=a;

ln=max(ln,b);

ln=max(ln,c);

cout<<ln;

return 0;

}

uses crt;

var a,b,c,max,t:integer;

begin

clrscr;

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

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

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

max:=a;

if max<b then max:=b;

if max<c then max:=c;

t:=a+b+c;

writeln('Tong cua 3 so la: ',t);

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

readln;

end.

Tham khảo:

program tim_chu_so;

uses crt;

var i,n,csln:longint;

k:integer;

a:array[1..1000]of longint;

st:string;

begin

clrscr;

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

str(n,st);

val(st,a[i]);

csln:=a[1];

for i:=1 to length(st) do

if csln<a[i] then csln:=a[i];

writeln('chu so lon nhat cua so ',n,' la:',csln);

readln;

end.

Câu 1: 

uses crt;

var n,i,d,x,y,max:integer;

st:string;

begin

clrscr;

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

str(n,st);

d:=length(st);

max:=0;

for i:=1 to d do 

  begin

val(st[i],x,y);

if max<x then max:=x;

end;

writeln('Chu so lon nhat la: ',max);

readln;

end. 

Câu 2: 

uses crt;

var a,b,i,bcnn:longint;

begin

clrscr;

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

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

bcnn:=a*b;

for i:=a*b-1 downto 1 do 

  if (i mod a=0) and (i mod b=0) then 

begin

if bcnn<i then bcnn:=i;

end;

writeln('Boi chung nho nhat la: ',bcnn);

readln;

end.

uses crt;

var a,b,c,nn:integer;

//chuongtrinhcon

function min(var x,y:integer):integer;

begin

if x<y then min:=x

else min:=y;

end;

//chuongtrinhchinh

begin

clrscr;

readln(a,b,c);

nn=min(a,b);

nn=min(nn,c);

writeln(nn);

readln;

end.