C can be soft like in celery or circus. Or hard like corn or crazy.
K is always hard like karate or kangaroo... unless silent when followed by an N like knee or knob.
English is a silly language
Someone should write the way it is properly pronounced using words so the people with English has a second or third language can say it right
Like
It's pronounced like with the C in corn, the a in the apple, and the s in the sam
So "corn" - "apple" "sam" would be CAS