Im trying to take all prime numbers 1 to 100 and outputting them to a file but its not working here is my code so far.

```
#include <iostream>
#include <fstream>
using namespace std;
bool isPrime(int numcheck);
void write_prime(int prime, ofstream &outfile);
int main()
{
ofstream primefile("prime.txt");
for (int ntc = 2; ntc = 100; ntc++)
{
if(isPrime(ntc))
write_prime(ntc, primefile);
}
primefile.close();
return 0;
}
bool isPrime(int numcheck)
{
for (int x = 2; x < numcheck; x++)
{
if(numcheck % x == 0)
{
return false;
break;
}
}
return true;
}
void write_prime(int prime, ofstream &primefile)
{
primefile << prime << "\n";
}
```