Q:

Why address of a variable change after each execution in C?

int i=10;
printf("Address of i = %u",&i);

Output:
Address if i = 3220204848

Output on re-execution:
Address of i = 3216532594

I get a new address of i each time I execute the program. What does this signify?

A:

It signifies that your program is being loaded a different (virtual) address each time you run it. This is a feature called Address Space Layout Randomization (ASLR) and is a feature of most modern operating systems.

