Determine if a number is prime. If it is not, then display its largest factor : for « Language Basics « C# / C Sharp

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C# / C Sharp » Language Basics » for Screenshots  Determine if a number is prime. If it is not, then display its largest factor /* C#: The Complete Reference  by Herbert Schildt  Publisher: Osborne/McGraw-Hill (March 8, 2002) ISBN: 0072134852 */ /*     Determine if a number is prime.  If it is not,     then display its largest factor.  */    using System;    public class FindPrimes {       public static void Main() {         int num;      int i;      int factor;      bool isprime;          for(num = 2; num < 20; num++) {        isprime = true;         factor = 0;          // see if num is evenly divisible        for(i=2; i <= num/2; i++) {          if((num % i) == 0) {            // num is evenly divisible -- not prime            isprime = false;            factor = i;          }        }          if(isprime)          Console.WriteLine(num + " is prime.");        else          Console.WriteLine("Largest factor of " + num +                            " is " + factor);      }    }     }                     Related examples in the same category 1. Simplest for 2. For loop for array 3. The finished C# statement Help system that processes multiple requests 4. Determine smallest single-digit factor 5. A negatively running for loop 6. loop with letter char as the control variable 7. Use commas in a for statememt 8. Use commas in a for statememt to find the largest and smallest factor of a number 9. Loop condition can be any bool expression 10. Parts of the for can be empty 11. Move more out of the for loop 12. The body of a loop can be empty 13. Declare loop control variable inside the for 14. Using break to exit a loop 15. Use continue 16. Demonstrate the for loop 17. Compute the sum and product of the numbers from 1 to 10. 18. For Loop Tester 19. If inside a for 20. For without init value 21. For without increase 22. For with empty condition 23. a for loop to display 1 to 5 24. Update two parameters in for loop