a$.$ The expected output:

$```$

Pointer: Demonstrate the use of & and $*$ operator :

m $=------100$

fx $=200\mathrm{.}600006$

cht $=$ z

Using & operator:

$-------------------------$

address of m $=0$x$7$ffee$6$c$49568$

address of fx $=0$x$7$ffee$6$c$49564$

address of cht $=0$x$7$ffee$6$c$49563$

Using & and $*$ operator:

$--------------------------------$

value at address of m $=100$

value at address of fx $=200\mathrm{.}600006$

value at address of cht $=$ z

Using only pointer variable:

$-------------------------------------$

address of m $=0$x$7$ffee$6$c$49568$

address of fx $=0$x$7$ffee$6$c$49564$

address of cht $=0$x$7$ffee$6$c$49563$

Using only pointer operator:

$-------------------------------------$

value at address of m $=100$

value at address of fx$=200\mathrm{.}600006$

value at address of cht$=$ z

$```$

b$.$ Note that the address that highlighted by yellow color can be different for your program.