function usage

[Pritpal singh]

can u tell me HOW AND WHEN to use switch() and break() function. also the header files for the same

[jsmith]

Both are keywords and not functions. No header is needed.

[Bazzy]

Read this:
http://www.cplusplus.com/doc/tutorial/control.html#break
http://www.cplusplus.com/doc/tutorial/control.html#switch