TDA3MV: How to read string like Chains_readChar?

Hello Champs,

1. Chains_readChar in  PROCESSOR_SDK_RADAR_03_08_00_0 can read single char. Is there some function which can read string? 

2. How to convert the char (Chains_readChar) to int or float？ Is int (Chains_readChar()) correct?

Thanks
Regards,
Shine