bool Prime::isPrime$($int number$)\{$

if $($number

return false;

$\}$

else $\{$

for $($int $i=2$; $i\sqrt[\phantom{2}]{?}$

$u$ mber;$++i$

if $($number $\%i==0)\{$

return false; $//$ If divisible, then not a prime number

$\}$

$\}$

return true;

$\}$

$\}$

int get$10001$stPrime$()\{$

int count $=0$;

int prime $=2$; $//$ Start from the first prime number

while $($count $<mtext\; id="EditorElement\_1510566"></mtext><mn\; id="EditorElement\_1510567">1</mn><mn\; id="EditorElement\_1510568">0</mn><mn\; id="EditorElement\_1510569">0</mn><mn\; id="EditorElement\_1510570">0</mn><mn\; id="EditorElement\_1510571">1</mn><mi\; id="EditorElement\_1510572">)</mi><mtext\; id="EditorElement\_1510573"></mtext><mi\; id="EditorElement\_1510574">\{</mi>$

if $($isprime$($prime$))\{$

$++$count;

$\}$

if $($count $<mtext\; id="EditorElement\_1510620"></mtext><mn\; id="EditorElement\_1510621">1</mn><mn\; id="EditorElement\_1510622">0</mn><mn\; id="EditorElement\_1510623">0</mn><mn\; id="EditorElement\_1510624">0</mn><mn\; id="EditorElement\_1510625">1</mn><mi\; id="EditorElement\_1510626">)</mi><mtext\; id="EditorElement\_1510627"></mtext><mi\; id="EditorElement\_1510628">\{</mi>$

$++$prime;

$\}$

$\}$

return prime;

$\}$

this is in the $.$cpp file. why can i not use the "isPrime" member function in the "get$10001$stPrime" member function? $($C$++)$