Can you code this in C?

I have a text file that I need to read and save the values(days and Prognostic_index) in an array in order to be used in further calculations. Can someone help me with this part? Here is the text file:

Days Prognostic_index

2 54

5 50

7 45

10 37

14 35

19 25

26 20

31 16

34 18

38 13

45 8

52 11

53 8

60 4

65 6