Find the Error Each of the following definitions and program segments has errors. Locate as many as you can. $48.$ double $*$dptr $=*$nullptr; $49.$ int x$,*$ptr $=$ nullptr; &x $=$ ptr; $50.$ int ptr$,$ value$=9$; ptr $=$ &value; $51.$ int x$,*$ptr $=$ nullptr; ptr $=$ &x; ptr $=100$; $//$ Store $100$ in x cout $<<$ x $<<$ endl; $52.$ float numbers$[]=\{2\mathrm{.}3,3\mathrm{.}4,4\mathrm{.}5,5\mathrm{.}6,6\mathrm{.}7\}$; cout $<<$ "The second element in the list of numbers is :$"$; cout $<<(*$numbers$++)<<$ endl; $53.$ int values$[20],*$iptr $=$ nullptr; iptr $=$ values; iptr $*=2$; $54.$ float level; int fptr $=$ &le