Thread: More fun with the chinese prime number algorigthm

I wrote a program that is supposed to take a chinese prime number factoring algorithm and print a list of x prime numbers. The code compiles with no errors and runs. But the program does nothing. Ive played around with it and havent been able to get anything to change. I don't quite know where my logic went wrong. Any ideas?

Code:

primes.h:

#include <stdio.h>
#include <stdlib.h>

int is_prime(int n); // function definition

is_prime.c:

#include "primes.h"	// Includes the header file

int is_prime(int n)
{
	int k, limit; // Initialization of local variables

	if (n == 2)	// This returns to '1' if n is equal to 2
		return 1;
	if (n % 2 == 0)	
		return 0; // The modulus determines if the number is divisible by 2 (remainder) and returns a boolerian 1 or 0 depending on the number input
	limit = n / 2; // This part of the code I dont understand
	for (k = 3; k <= limit; k += 2)	// The for statement assigns a value of 3 to k and checks if the number is divisible by 3
		if (n % k == 0)	// if the modulus of n and k (3) is equal to zero it returns a 0
			return 0; // returns 0 for odd non-prime numbers
	return 1; // returns 1 for prime numbers
}

main.c:

#include "primes.h"	// includes the header file

int limit, n;

int main(void) // main program
{
	int i = 1; // counter variable
	printf("PRIMES WILL BE PRINTED.\n\n"); // printed messages
	printf("How many do you want to see?\n");
	scanf("%d", &limit); // assigns the upper value of primes to find
	while (i <= limit) { // loops until the incrementer reaches the end number of primes
		is_prime(n);
                  if(n == 1)
                       printf("%6d:      %10d\n",i++,n); // prints out prime number and counter, then increments the counter
		  else
			  i++; // increment counter without printing 
     }
	return 0;
}