$4.$ Consider the following program:

$1$ int a $=2$;

$2$ void foo$($int b$)\{$

$258$ Lee & Seshia, Introduction to Embedded Systems

$9.$ MEMORY ARCHITECTURES

$3$ printf$("\%$d$",$ b$)$;

$4\}$

$5$ int main$($void$)\{$

$6$ foo$($a$)$;

$7$ a $=1$;

$8\}$

Is it true or false that the value of a passed to foo will always be $2?$ Explain.

Assume that this is the entire program, that this program is stored in persistent

memory, and that the program is executed on a bare$-$iron microcontroller each time

a reset button is pushed.