#C++,,c++ code for check the number is prime or not

C++ ll c++ code for check the number is prime or not #c++ 1. **Function `isPrime(int number)`**: Checks if `number` is less than or equal to 1, returns `false` because prime numbers are greater than 1. Checks if `number` is 2, returns `true` because 2 is the smallest and only even prime number. Checks if `number` is divisible by 2, returns `false` because even numbers greater than 2 are not prime. Uses a loop starting from 3, checks divisibility up to the square root of `number`, skipping even numbers (hence `i += 2`). If `number` is divisible by any odd number `i`, returns `false`; otherwise, returns `true`. 2. **Main Function**: Prompts the user to enter a number. Calls `isPrime()` function to check if the entered number is prime or not. Prints appropriate message based on the returned result (`true` or `false`). This implementation efficiently checks whether a given integer is a prime number or not using basic number theory principles.