class Addition{
static int a=20,b=30,c;
public static void main(String[]args){
add();
sub();
multi();
}
static int add() {
System.out.println("addition");
System.out.println(a+b);
return c;
}
static int sub(){
System.out.println("substraction");
System.out.println(a-b);
return c;
}
static void multi() {
System.out.println("multiplication");
System.out.println( a*b);
}
}
