C code to generate prime numbers

generatePrime.c

#include <stdio.h>
#include <math.h>

int isPrime(unsigned long long n);

int main() {
	printf("%d", 2);
	unsigned long long i = 3;
	while (1) {
		if (isPrime(i)) {
			printf("%llu\n", i);
		}
		i+=2;
	}
}

int isPrime(unsigned long long n) {
	if (n == 2) {
		return 1;
	}
	for (unsigned long long i = 3; i < n; i+=2) {
		if (n % i == 0) {
			return 0;
		}
		if (n / i < i) {
			return 1;
		}
	}
	return 1;
}