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Chapter 5: Problem 12

When you increment a variable, what are you doing? When you decrement a variable, what are you doing?

Short Answer

Expert verified
Answer: Incrementing and decrementing variables refer to increasing or decreasing their values by a specific amount, usually by 1. Incrementing increases the variable's value, while decrementing decreases it. These operations are widely used in programming for various purposes, such as counting loops or changing numerical values. Examples of incrementing and decrementing syntax in programming languages are `x = x + 1` or `x += 1` for incrementing, and `y = y - 1` or `y -= 1` for decrementing.

Step by step solution

01

Defining Incrementing and Decrementing Variables

Incrementing a variable means increasing its value by a specific amount, usually by 1. On the other hand, decrementing a variable means decreasing its value by a specific amount, also usually by 1. Incrementing and decrementing are common operations in programming and can be used to count loops, change numerical values, and perform various other tasks.
02

Incrementing a Variable: Example

For example, let's say we have a variable 'x' with an initial value of 2. If we increment 'x' by 1, the new value of 'x' will be 3. In most programming languages, the syntax for incrementing a variable is: `x = x + 1` or `x += 1`
03

Decrementing a Variable: Example

Now, let's say we have a variable 'y' with an initial value of 5. If we decrement 'y' by 1, the new value of 'y' will be 4. In most programming languages, the syntax for decrementing a variable is: `y = y - 1` or `y -= 1`
04

Key Points

Incrementing and decrementing a variable are ways to change the value of a variable by a specific amount, typically 1. These operations are widely used in programming for various purposes, such as counting loops or changing numerical values.

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