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A pump is a device used for pumping or moving a volume of fluid from its inlet port to its outlet port. Examples are Cycle pump, Foot pump, hand pump...

We say this statement that the file name should be same as the class name to make sure there is no confusion while compiling and running the program.

If we put diesel in petrol engine, then either it will not run at all or run for a short distance with much smoky exhaust. Diesel is less volatile and...