nested for loop Example

Example

 The following program uses a nested for loop to find the prime numbers from 2 to 100: 

using System;  

namespace Loops 

{ 

     

   class Program 

   { 

      static void Main(string[] args) 

      { 

         /* local variable definition */ 

         int i, j;  

         for (i = 2; i < 100; i++) 

         { 

            for (j = 2; j <= (i / j); j++) 

               if ((i % j) == 0) break; // if factor found, not prime 

            if (j > (i / j))  

               Console.WriteLine("{0} is prime", i); 

         } 

Console.ReadLine(); 

      } 

   } 

} 

2 is prime 

3 is prime 

5 is prime 

7 is prime 

11 is prime 

13 is prime 

17 is prime 

19 is prime 

23 is prime 

29 is prime 

31 is prime 

37 is prime 

41 is prime 

43 is prime 

47 is prime 

53 is prime 

59 is prime 

61 is prime 

67 is prime 

71 is prime 

73 is prime 

79 is prime 

83 is prime 

89 is prime 

91 is prime