//Blocks
fn main(){
  let apple = 10;
  //Define block with {}
  {//Begin Block
    //The blocks are ISOLATED
    let pear = 12;
    println!("Apple = {}, Pear = {}", apple, pear);
  }//End Block
  //If you print this line you will have error
  //println!("Apple = {}, Pear = {}", apple, pear);
}
/*Result
Apple = 10, Pear = 12
*/