how to control the speaker?

[Jasonymk]

how to play a *.wav file according to its byte range??

please help...thank you

[DougDbug]

It depends on your operating system. (There is nothing in ANSI/ISO C++ for playing sounds.)

For Windows, include windows.h and use PlaySound(MyFile.wav)

I didn't understand "according to its byte range"

[EDIT]
PlaySound() only works with external speakers. It won't work with the little internal PC speaker.