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  Tutorial: Loop Idioms

Loops are often used to accomplish the same kinds of tasks, so many loops tend to be one of several common styles.

Tutorial Details:

Loop reading input
It's very common to read input in a loop: read a value, process it, go back to read another, etc. Many beginning programs have this structure for reading input from the user. When a standard GUI (Graphical User Interface) is used, loops are not used, but loops are still used to read from files or over the internet.

Loop a fixed number of times
Sometimes you just want to do something a fixed number of times.

Loop over a String using an index
A common problem is move sequentially over each character position in a string to look for something, or to get the character and do something.


 

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