Give the output of the following program segment and also mention the number of times the loop is executed.

int a,b;
for(a=6;b=4; a <= 4; a=a+ 6)
{
if(a%b==0)
break;
}
System.out.println(a);

Give the output of the following program segment and also mention how many times the loop is executed.

int i;
for(i = 5; i > 10; i++)
System.out.println(i);
System.out.println(i * 4);

Rewrite the following program using while loop:

import java.util.*;
class Number
{
public static void main(String args[])
{
int n,r;
Scanner in = new Scanner(System.in);
System.out.println("Enter a number");
n=in.nextInt();
do
{
r=n%10;
n=n/10;
System.out.println(r);
}
while(n!=0); 
}
}

What is for loop? What are the parameters used in for loop?