What is the output of the following code if the input is $\text{'}*\text{'}?$

char c;

cin$>>$c;

switch$($c$)\{$

case $+$ : cout$<<$

addition operation performed$$;

case $*$ : cout$<<$

multiplication operation performed$$; break;

case $-$: cout$<<$

subtraction operation performed$$; break;

case $\%$: cout$<<$

mod operation performed$$; break;

default: cout$<<$

invalid operator$$;

$\}$