C++

Question

int a=4,b=2,c;
int *p;
p=&a;
c=b*p;
// -> c=? edited

Answer 1

to fix the compile error on line 4, try instead :
b = *p;

( what you wrote b*=p is a multiplication between an int and a ptr, equivalent to
b = b * p
which fails.
)

See sample code below:
https://code.sololearn.com/cIeqM1m9UKNt/?ref=app

Answer 2

compilation error

Answer 3

This is just an idea, not a complete program should still have errors occur

Answer 4

you'll get a compilation error, because you intended to multiply an int type variable with a pointer that point to an int(int*)