Reading parameters from input file


I am trying to write a class that will be reading input parameters for the code from a text file. Let's say I have variables x,y,z somewhere in my code, I would like to read their values from the file where they should be stored in a group with specific name. For example, if the group name is #InitialCoords#, the content of the input file should look like this:

x = 1.0;
y = 2.0;
z = 3.0;

Any ideas on how to implement it? I couldn't find much help on the web.

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