how to check if a number is prime c++
bool isPrime(int number){
if(number < 2) return false;
if(number == 2) return true;
if(number % 2 == 0) return false;
for(int i=3; (i*i)<=number; i+=2){
if(number % i == 0 ) return false;
}
return true;
}fast way to check if a number is prime C++
//O(sqrt(n))
bool isPrime(int num){
if(num <= 1) return false;
for(int i = 2; i <= sqrt(num); i++){
if(num % i == 0) return false;
}
return true;
}Copyright © 2021 Codeinu
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