PC: Ingame, /gamemode 1
Xbox: through menu
PE: impossible
You need the single player commands mod. Then you type /gamemode 1. This will change your survival world to creative. To put it back use /gamemode 0.
Do /gamemode s
Currently, there is no way to change your game mode in a game (In the Pocket Edition). The default world will put you in survival, but you can make it a creative world by taping the Gamemode button.
To change from survival mode to creative mode in Minecraft on an iPhone, first, pause the game by tapping the pause button. Then, select "Settings" and scroll down to "Game." Look for the "Game Mode" option and tap it to switch from Survival to Creative mode. Note that you need to have cheats enabled in your world settings to make this change.
i dont know.iv tried to find out my self
They are the admins of the server. They can kick, ban, mute, change the time of day, switch from creative to survival or survival to creative, and have more control over the server than regular users.
Build the map on Creative Mode then go to seedscope.net and upload your level.dat for the map on the Change Survival to Creative option. You should then download the new level.dat. Replace it with the old level.dat and when you start Minecraft, you should see that it is now a survival map.
(this only works if you have singleplayer commands or if your a mod or up in a multiplayer server) /gamemode (name here) (1 for creative 0 for survival) ex: /gamemode blabla34 1 creative or to switch from survival to creative and back just do: /gm
If you are in the gamemode creative, then no mobs will attack you. To change this (assuming you have cheats enabled), you must change your gamemode to survival or adventure. To do so, type in "/gamemode survival" without quotations and including the /.
Start a new world then go to the button directly under where you name the worl and click on it until it says creative.
If you are the server owner (or can get the owners to change game mode or just yours) you can switch it to creative mode in the server conf file or by command in game by and op. otherwise a server in survival mode is staying in survival mode.
If you are on a single world, do /gamemode survival and it should change you back to survival. If that does not work go to settings, and click "Open to LAN" Then hit cheats on. The try to do /gamemode survival