fn main(){
    let  s = String::new();
    let mut s1 = s;
    s1.push_str("hello");   
    s1.push_str(  " sot keni dale mire keni marre ? ");
    s1.push_str("!");
    
    
   
    let mut  v = Vec::new();
    v.push(10);
    println!(" {:?} ", v);
    let mut s2 = String::from(" pershendetje ");
    s2.push_str(" sot keni mare !");
    println!(" {} ", s2);
    v.push(4);
    
    
    let p = v.as_mut_ptr();
    unsafe{
        
        let p1 = p.add(1);
        *p1 = 5;
    println!(" {} ", *p1);
    
        println!(" s1 e ka cap {} ", s1.capacity());
        println!(" s1 e ka gjatesin {} ",s1.len() );
        println!(" v e ka cap {} ", v.capacity());
        println!("  v e ka gjatesi {} ", v.len());
        println!(" s2 cap {} ", s2.capacity());
        println!(" s2 gjatesia {} ", s2.len());
        let b = Box::new(999);
        let ptr = Box::into_raw(b);
        let b1 = Box::from_raw(ptr);
        println!(" {} ", *ptr);
        *ptr = 000;
        println!(" {}", *ptr);
        println!(" adresa e ptr {:p} ", ptr);
        println!(" adres aq e p eshte {:p} ", p);
     let mut v = Vec::with_capacity(100);
     v.push(20);
     v.push(10);
     let p7 = v.as_mut_ptr();
     println!(" v eshte {:?} ", v);
     *p7 = 2000;
     println!(" p6 {} ", *p7);
     let p7_larg = p7.add(15000);
     *p7_larg = 999;
     println!("vkera ne p7_larg  {} ", *p7_larg);
     println!(" add e p7_large eshte {:p} ", p7_larg);
     }
     
    }
    
    
    

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