Created
June 22, 2010 14:21
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Is n a prime number?
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| int is_prime(unsigned n) { | |
| unsigned c; | |
| if (n < 2) return 0; | |
| for (c = 2; c < n; c++) { | |
| if ((n % c) == 0) return 0; | |
| } | |
| return 1; | |
| } |
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I don't take credit for this. It's just a handy thing to have if you want a quick, simple (and inefficient) way to check whether a number is prime.