C++ create an output file with prime numbers in it:

I did the program and it compiles but the file does not create??? Here is my code:

#include #include using namespace std;

bool isPrime(int);

int main() { fstream outfile; outfile.open("primesBefore100.txt");

outfile << "The prime numbers from 1 through 100." << endl; for (int num = 1; num <= 100; num++) {

if (isPrime(num)) outfile << num << endl; } outfile.close(); cin.get(); return 0; }

bool isPrime(int integer) {

if (integer == 1) return false;

for (int i = 2; i <= integer / 2; i++) { if (integer%i == 0) return false; } return true; }