How do electrons get a charge?

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Electrons and protons possess an electric charge, while neutrons do not, due to their composition. Neutrons are made up of quarks, which are the fundamental particles that give protons their positive charge. The charge of electrons is an inherent property that remains unexplained. The discussion highlights the mystery surrounding why only certain particles carry a charge. Understanding the nature of charge in particles continues to be a topic of scientific inquiry.
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My question is why only protons and electrons have a charge?Why not neutron?
 
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For electrons its simply an observed property they have - we don't know the answer why as yet.

The answer for protons and neutrons is they are composed of quarks:
http://en.wikipedia.org/wiki/Quark

Thanks
Bill
 
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