Combining Multiple Logic Statements

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Section 9.6 Combining Multiple Logic Statements

Sometimes you may want to check whether several statements are true at the same time, or whether at least one of several statements is true, or whether something is not true, etc. We’ll take a look at how do do this in C now.

The way to write the logical AND in C is with two ampersand signs: &&

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The way to write the logical OR in C is with two vertical bars: ||

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The way to negate a condition in C is to put an exclamation mark in front of it: !(...)

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Investigate 9.4.

Zero is the value which C interprets as false. How could you use a logical operator so that C would interpret anything except zero as false, such as in an if statement?

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