Simple java,python,c,c++.

1 Java Language2//Package Main3//be careful not to add the package name, or you will get an error. 4 5 ImportJava.io.*;6 ImportJava.util.*;7 Cin.hasnext ();8 cin.hasnextline ();9 cin.hasnextbigdecimal ();Ten Cin.hasnextbiginteger (); One Cin.hasnextboolean (); A cin.hasnextbyte (); - cin.hasnextdouble (); - cin.hasnextint (); the Cin.hasnextlong (); -PublicclassTest { - Public static void Main (String args[]) -     { +Scanner cin = new Scanner (System.inch); - int A, b; +          while(Cin.hasnextint ())//determine if there is a value in CIN A         { atA =cin.nextint (); -b =cin.nextint (); -System.out.println (A +b); -         } -     } - } in Public static void Main (String args[]) -     { toint X=1; +int y=~1; -System.out.println (integer.tobinarystring (x));//1 theSystem.out.println (integer.tobinarystring (y));//1111111111111111111111111110 *System.out.println (y);//-2 $     }Panax Notoginseng*Test 3: Reading data from a text file -*/ the static void TestExample03 () { +1, open a character stream object in memory to read the file A         Try { theReader reader=new FileReader ("E:/readme.log"); +              -//read a loop, one at a time $int ch=Reader.read (); $StringBuffer buffer=new StringBuffer (); -              while(Ch!=-1) { //Read Success - Buffer.append ((char) ch); theCh=Reader.read (); -             }Wuyi System.out.println (buffer.tostring ()); the3, close the stream - reader.close (); Wu } catch (FileNotFoundException e) { -System.out.println ("the file to be read does not exist:"+e.getmessage ()); About } catch (IOException e) { $System.out.println ("file read error:"+e.getmessage ()); -         } -     } -/** A*Test 4: Write data to a text file +*/ the static void TestExample04 () { -System.out.println ("Please enter the content:"); $String text=Input.next (); the         Try { the1, open the stream theWriter w=new FileWriter ("e:/test. txt", true); the2, write content - w.write (text); in3, close the stream the w.close (); the } catch (IOException e) { AboutSystem.out.println ("File Write error:"+e.getmessage ()); the         } the     } the #!/usr/bin/env python + #Coding=utf-8 - #Python uses 2.7, indents can use tab, 4 spaces, or 2 spaces, but only one can be selected, not a variety of mixing the  while1:BayiA=[]   thes =raw_input () the     #raw_input () do not have any information -     ifs! ="": -          forXinchs.split (): the a.append (int (x)) the             the         Printsum (a) the     Else: -          Break the  the//C language the #include <iostream.h>//Data flow input/output94 #include <math.h>//define Mathematical functions the #include <stdio.h>//define input/output functions the #include <stdlib.h>//define miscellaneous functions and memory allocation functions the #include <string.h>//String processing98 #include <stdio.h> About int main () - {101 int A, b;102     while(SCANF ("%d%d", &a, &b)! =EOF)103printf"%d\n", A +b);104System"Pause"); the }106 107 108C++language109 #include <iostream> the using namespace std;111 int main () the {113 int A, b; the      while(Cin>> a >>b) thecout << A + b <<Endl; the     return0;117 }118 119  - introduce the input control of 1:java121Test 2: Test output x=1 and y=~1122 Test 3: Reading data from a text file123Test 4: Write data to a text file

Simple java,python,c,c++.