, n); else printf("%d is not a prime number.", n); return 0; } Run Code Output Enter a positive integer: 29 29 is a prime number. In the program, a for loop is iterated from i = 2 to i < n/2. In each iteration, whether n is perfectly divisible by i is checked ...
In this program, the while loop is iterated ( high-low-1) times. In each iteration, whether low is a prime number or not is checked, and the value of low is incremented by 1 until low is equal to high. Visit this page to learn more about how to check whether a number is prime ...
If it is True, num is not a prime number. If it is False, num is a prime number. Note: We can improve our program by decreasing the range of numbers where we look for factors. In the above program, our search range is from 2 to num - 1. We could have used the range, range...
In the above program, the user is prompted to enter a number. The number entered by the user is checked if it is greater than 1 using if...else if... else statement. 1 is considered neither prime nor composite. All negative numbers are excluded because prime numbers are positive. Numbe...