C$++$ program to read a txt file and counts the amount of prime numbers in it$.$what i have so far is incorrect.

#include

using std::cerr;

using std::cout;

using std::endl;

#include

using std::ifstream;

#include

$//$ This method is used to check if a number is prime or no

bool isPrime$($int number$)$

$\{$

if $($number $<=1)$

return false;

for $($int i $=2$; i $<$ number; i$++)$

$\{$

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

$\{$

return false;

$\}$

$\}$

return true;

$\}$

$//$ Driver method to test the code

int main$()$

$\{$

ifstream input;

int num;

int count $=0$;

input.open$("$randomINt$.$txt$")$;

if $(!$input$)$

$\{$

cerr $<<$ "File cannot be opened!" $<<$ endl;

exit$(1)$;

$\}$

input $>>$ num;

while $(!$input.eof$())$

$\{$

if $($isPrime$($num$))$

count$++$;

input $>>$ num;

$\}$

input.close$()$;

cout $<<$ "The total number of prime numbers is : $"<<$ count $<<$ endl;

return $0$;

$\}$