Thread: Prime factor

i am trying to make program that checks if the number is a prime or not:

Code:

int asal(int a,int b){
	int x;
	for(x=2;x<a;x++){
		if(a%x!=0){return a;}
		else {return b;}}}

but when i do this asal(9,1)=>it returns 9 implying it a prime number
i stared at the code for about 10 min.s couldnt find it so i said good people in c board could help me (i wish)

note(In Turkish(asal)==In English(prime)(note(i am Turkish)))
(i tried make it look like C programming

Code:

if(a%x!=0){return a;}

You got your logic wrong. You want there to be a remainder in division.

first of all if you want it to be a program that interacts with the user you should add a "number" which is entered by the user..

your for loop has a mistake, it should be ;(...;x<=(a-1);...)

and a%x==0