converting simple C code to Java

[sbutt]

Hi People,
I am new to C programming and have very little idea on how to convert this following C code to Java:

* (DWORD *) roomcode = * (DWORD *) (roomcode + 1) + ((roomcode[0] & 1) ? 0x00000020:0) + ((roomcode[0] & 2) ? 0x00002000:0)
+ ((roomcode[0] & 4) ? 0x00200000:0) + ((roomcode[0] & 8) ? 0x20000000:0);
roomcode[4] = 0;

Supposidily, this above code is doing a mapping of 'TT room code' to 'TRH room code', according to thsi following table:


TRH room code TT room code Binary Code
ABCD PABCD 0101 0000
aBCD AABCD 0100 0001
AbCD BABCD 0100 0010
abCD CABCD 0100 0011
ABcD DABCD 0100 0100
aBcD EABCD 0100 0101
AbcD FABCD 0100 0110
abcD GABCD 0100 0111
ABCd HABCD 0100 1000
aBCd IABCD 0100 1001
AbCd JABCD 0100 1010
abCd KABCD 0100 1011
ABcd LABCD 0100 1100
aBcd MABCD 0100 1101
Abcd NABCD 0100 1110
abcd OABCD 0100 1111

Could someone please give me soem hint on how to convert it to java?

Thanks.

[sunde887]

Start by trying to understand what the C code is doing

[JosAH]

What is the type of the 'roomcode' variable?

kind regards,

Jos

[sbutt]

i think it is better to write a simple java program instead of decoding this C code. But thanks anyway.

[sunde887]

Understanding the code is what is needed, mindlessly translating code is simple, with enough banging on the keyboard you will figure something out eventually. This process is simply time consuming. If you understand what the c code does, it will take very little time to write the equivalent java code.