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380: Practice

You easily can define arrays with more than one dimension: You simply add more bracketed dimension sizes. For example, to define a double array with 2 rows and 100 columns, you proceed as follows:

int 2_d_array[2][100]; 

Write writer functions to write the lengths and radii of cylinders in such an array. Use your writers to store cylinder radius–length pairs provided in a file. Then, write readers to help you determine the average radius, length, and volume of the cylinders.