Are You A Prime Number

Question

I\'ve been interested in the problem of finding a better prime number recognizer for years. I realize this is a huge area of academic research and study - my interest in this i

Answer 1

can you suggest an improvement

Here you go ... not for the algorithm, but for the program itself :)

• If you aren't going to use argc and argv, get rid of them
• What if I input "fortytwo"? Compare scanf() == 1, not != EOF
• No need to cast the value of sqrt()
• returnValue is not needed, you can return a constant: return 0;
• Instead of having all of the functionality inside the main() function, separate your program in as many functions as you can think of.