"if u dont put strict and warning coz i missed putting (my) and am not fun of strict and warning. coz of breaking my code everytime"

You are so completely wrong. strict and warning DO NOT BREAK CODE! They reveal mistakes in your code. If you "miss putting (my)" you may overwrite a variable holding important data and NEVER KNOW ABOUT IT.

Using strict and warnings should be the first lines you type in your script. Until you start doing that, I don't think anyone here should bother replying to you any more.

Running and working aren't the same thing. Code can execute and do something stupid, which doesn't solve the task at hand. This is what your code does.