Question

Write a MARIE program that accepts an integer from the user, and if it is a prime number the program will output 1, otherwise, the program will output 0.
Examples:
If the user input is 17, the output would be 1
If the user input is 2, the output would be 1
If the user input is 15, the output would be 0
If the user input is -2, the output would be 0

Answer 1

Answer:

import java.io.*;

class prime

        {

                       public staticvoid main ( String args [] ) throws IOException

                         {

                                      BufferedReader in = new BufferedReader ( new InputStreamReader ( System . in ) );

int count = 0 ;

System. out. println ( " Enter a number " );

int n = Integer . parseInt (in . readLine ( ) );

for ( int i = 0 ; i < = n ; i + +)

{

        if ( n % i = = 0 )

          {

                 count = count + 1 ;

           }

}

if ( count < = 2 )

{

      System. out. println ( " It is a prime number " );

}

else

{

            System. out. println ( " It is not a prime number " );

}

                           }

        }