1.hello World

Title: Write the program, the output string "Hello world!".

Notice

1. All subsequent programs, at the end of the run will have to output a separate carriage return line.

2. For all subsequent programs, the main function is the type int.

Answer by C:

1 #include <stdio.h>23int  main () {4     puts ("  Hello world! " ); 5     return 0 ; 6 }

1 #include <stdio.h>23int  main () {4     printf ("  Hello world!\n"); 5     return 0 ; 6 }

Answer by C + +:

1 #include <iostream>23usingnamespace  std; 4 5 int Main () {6     cout<<"Hello world! "<<Endl; 7     return 0 ; 8 }

Answer by Java:

1 /*2 * To change this template, choose Tools | Templates3 * and open the template in the editor.4  */5  PackageJIU;6 7 /**8  *9  * @authorJIUTen  */ One  Public classJiu { A  -     /** -      * @paramargs the command line arguments the      */ -      Public Static voidMain (string[] args) { -         //TODO Code application logic here -System.out.println ("Hello world!"); +     } -}

Answer by Python 2.7:

1 Print " Hello world!\n "

1.hello World