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OK, let's continue this lecture with conversions, so why we need conversion, because when you add

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up numbers or multiply or you need a smaller data type, you convert it into another type.

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There are two types of conversions.

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Widening and narrowing, automatic or widening conversion is easy.

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Imagine variables as boxes.

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Byte is a small box short.

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It's a bigger one.

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You can easily put the content of a small box into a bigger box as we go along.

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It's easy to see why we can convert upwards in case of load and double.

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We use it to store along.

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The other way is explicit conversion or narrowing while it's not too pleasant.

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We have to put the content of a bigger box into a smaller one.

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We can lose data here which can cause problems.

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So as when we go downwards, we have to use the following form first the desired data type, then the

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new variable name equals the desired data type in parentheses, then a value like thousand or three

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hundred or two or another variable name.

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We also call this casting.

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Right, and I think it's easier to see how it works in practice.

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So let's do some coding.