Code:
public class greatest
{
public Static void main (String args[])
{
int a,b,c;
a=10;
b=20;
c=15;
if(a>b&&b>c)
{
System.out.println("a is greatest number");
}
else if(b>a&&b>c)
{
System.out.println("b is greatest number");
}
else
{
System.out.println("c is greatest