Changing the address of a variable

Question

Is there a way to set an integer variable at the absolute address 0x67a9 to the value 0xaa55? The compiler is a pure ANSI compiler.

How to accomplish this?

This is a program related to embedded systems. As in there we can access a specific memory location.

Answer 1

Try this:

*((int*)0x67a9) = 0xaa55;