You do not know Hello World [C ++ realization]

Within say OIer of the most simple program, I am afraid none other than non-Hello World, then this article on how to write a Hello World (beaten).

• The simplest type of implementation:
  
  

#include <iostream>
using namespace std;
int main(){
    cout << "Hello World" << endl;\
    cin.get();
    return 0;
}

• When the user presses the button when the show Hello World, loosen disappeared.
  
  

#include <iostream>
#include <cstdio>
#include <conio.h>
using namespace std;

int main(){
    while(1){
        if(_kbhit()){
            cout << "Hello World";
            system("cls");
            _getch();
        }
    }
    return 0;
}

• Set the text color and size (need to install the graphics library)
  
  

#include <graphics.h>
#include <conio.h>

int main(){
    initgraph(600,480);
    settextcolor(RGB(2,134,219));
    settextstyle(60, 0, _T("微软雅黑"));
    outtextxy(180,200,_T("Hello World"));
    _getch();
    closegraph();
    return 0;
}

Run shot:

• Let the computer says: Hello World

#include <windows.h>
#include <mmsystem.h>
#include <conio.h>

int main(){
    mciSendString("open say.mp3 alias music",NULL,0,NULL);
    mciSendString("play music repeat");
    _getch();
    return 0;
}

Run the above code needs to record a Hello World with audio recordings, and then put it in the program directory, named say.mp3 (be careful not to have two suffix)