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Tuesday, 5 July 2011

Write a program that read a number and check wheather it is prime or not

import java.util.*;
class prime
public static void main (String arg[])
Scanner in = new Scanner (;

int a,b=2,c=1;
System.out.print ("\n\t Enter number = ");

if (a%b==0)

}while (b<a/2);

if (c==1)
System.out.println ("\n\t Prime ");
System.out.println ("\n\t Not prime ");


          In this program, if a%b is equals to 0 it means there is a number which divides a properly, then c will assigned 0. After this process finishes, if condition will be evaluated and the result will be displayed according to the conditional expression.

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