wap to find prime factors of a given positive int number (make function "factor" to find prime factor)

/*wap to find prime factors of a given positive int num(make function "factor"
to find prime factor)*/

#include<stdio.h>
#include<conio.h>

void factor(int n);
void main()
{
	int n;
	clrscr();
	printf("Enter any int to find its Prime Factors:\n");
	scanf("%d",&n);
	factor(n);
	getch();
}
void factor(int n)
{
	int a,i,j,c=0;
	printf("prime factor\n");
	for(i=2;i<=n;i++)
	{
		c=0;
		if(n%i==0)
		{
			a=i;
			for(j=2;j<i;j++)
			{
				if(a%j==0)
				{c++;}
			}
				if(c==0)
				{printf("%d\n",a);}
		}
	}
}