get_node_info()

The goal of get_node_info() is to read node information from the file nodeinfo.txt. Each line in this file contains a node name and an IP address separated by a semicolon. For example, the file looks like this:

nodeA;10.1.1.1
nodeB;10.1.1.2
nodeC;10.1.1.3
nodeD;10.1.1.4

How do we do this?

To read the nodes from the text file, you need to:

1. File I/O:

   • Open the file using fopen().

2. Input Parsing:

   • Use fgets() to read each line.

   • Use sscanf() to extract the node name and IP address from each line.

3. Node Count:

   • Use a counter (passed as a pointer) to keep track of how many nodes are read.

   • Ensure that this count does not exceed the constant NODE_MAX.

4. Error Handling:

   • If the file cannot be opened, print an error message and return a non-zero value.

   • Return 0 on success.