Question

I am trying to store the character at an address in a variable, but I have a compile error ( invalid type argument of unary ‘*’ (have ‘int’)).

int address = 4000;
char character = (char) *address

Why doesn’t this code dereference the pointer to store the character at memory location 4000 and how can I fix it? Thanks.

Answer 1

Syntactically, you are looking for

char character = *(char*)address;

Whether this will do anything useful is another matter…

Some issues to ponder:

1. int may or may not be wide enough to represent every valid address (on my system, it isn’t).
2. How do you know what’s at address 4000 in your process’s memory map?