How to send messages between two pc without using net, cable and such devices but only using programming language

Answer 1

you mean wifi ad hoc?
no cable , no programming language also.

Answer 2

Hmm...pausing for thought.

Answer 3

for transfer data between two devices. the both devices must have physical connection between them either by wired or wireless means. you cannot transfer data between two devices without connecting them physically (by hardware means).
and if you want to transfer data between two devices by the means of TCP IP you can simply use sockets.
and if you are trying to make your custom device (embedded device) then use SPI, I2C, CAN or USB interface

Answer 4

lol nice words @luka

Answer 5

it can be done through using your ip address and the another person ip address

Answer 6

but I am facing some difficulties.