[AroseKhanNiazi]

it happened to me many times, it was once bracket problem once it was that i wrote some main function wrong and once it was that i wrote "public" as "ublic". The only way you can figure it out is /*half code*/ and see if it crashes or not then do it with other half as you have founded out the bugged half then repeat this process in /* */ comment half from the bugged half till you fount it out.