How to read particular data from text files

I have text file(s). I some how can be able to read them using fid & fopen. After reading, I want to store the data of two types:

1. When "Additional information" it appears, I want to read the information starting from below this text (Additional information)appears and read up to just above ----- line appears.
2. When "xy(24 points)" appears, read x, y data below this text (xy(24 points)) appears. I tried using used strtok, but not successes.

Please help me.

1st information I want to store is: # Alarmtype1 heater temp higher, event ID:1040588 # system error:5480 # Alaram, time exceeds

when 5480 appears just store the above line and event ID (1040588). "system error:5480" this is always constant But some time 5480 may appears above in the text file. I only want to consider when it appears after "Additional information" line.

2nd Information I want to store is: data under "xy(24 points)" and that is:

-14  0.28
-13  0.27
-12  0.26
-11  0.25
-10  0.24
-9  0.23
-8  0.23
-7  0.22
-6  0.22
-5  0.22
-4  0.22
-3  0.22
-2  0.22
-1  0.22
0  0.23
1  0.22
2  0.22
3  0.22
4  0.22
5  0.22
6  0.22
7  0.23
8  0.23
9  0.23
10  0.24
11  0.26
12  0.29