Is there any flags to disable warning and/or errors given by GCC 4.3.3?

[Naganna]

Hi All,

      I am not able compile my project with GCC 4.3.3 C++. My project 
was compiled by GCC 4.1.x. 

      Is there any flags to disable warning and/or errors given by GCC 
4.3.3?

                                 or

      I should remove and/or change code to eliminate warning and/or error?