IDE compiler and csc doubt

hi there,

i have written a C# helloworld file named a.cs , when i compiled it using csc, there is only one file which is a.exe generated. This differs when i used some kind of IDE compiler like shardeveloper for example, it generated some other files like a.pdb , a.exe.manifest. The program is executable even without these files, so may i know what are these files actually for? thank you

The .pdb file is a debuging file creaed by the IDE. The manifest is more than likley IDE Specific. The exe is all you need, in VS.NET if you hit F5 with your code open it'll make a temporary PDB for debugging.