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In C, a linked list allows you to create a list without deciding ahead of time how long it might be, and without wasting memory by allocating elements you don't have yet. The downside is that you...
Create a while loop any time your C program needs to iterate over values or variables. With a few simple precautions, while loops can be easy and powerful.
C does not initialize variables automatically, so if you do not initialize them properly, you can get unexpected results. Fortunately, C makes it easy to initialize variables when you declare them.