Function SCIPaddDialogHistoryLine 

pub unsafe extern "C" fn SCIPaddDialogHistoryLine(
    scip: *mut SCIP,
    inputline: *const c_char,
) -> SCIP_RETCODE

adds a single line of input to the command history which can be accessed with the cursor keys

@return \ref SCIP_OKAY is returned if everything worked. otherwise a suitable error code is passed. see \ref SCIP_Retcode “SCIP_RETCODE” for a complete list of error codes.