To Print Prime Factors of a number

/* C Program To Print Prime Factors of a number */

#include
int main()
{
int num,i=1,j,k;
printf("\nEnter a number:");
scanf("%d",&num);
while(i<=num){
k=0;
if(num%i==0){
j=1;
while(j<=i){
if(i%j==0)
k++;
j++;
}
if(k==2)
printf("\n%d is a prime factor",i);
}
i++;
}
return 0;
}