- When a program needs storage, you allocate it…in the code by setting aside space for a variable.…When you need more than one variable, you create an array.…And when you don't know how much space you need, you guess.…But there's a better way.…In this movie, I cover the topic…of allocating storage in your code.…You'll see how to properly ask for storage,…determine that it's available,…and then access that storage in your code.…Storage is divvied up by the operating system.…
Your program asks for space as it needs it.…This request is made in one of two ways.…The first way is to declare a variable.…Storage for the variable is set aside…and made available for use.…And for a specific purpose in the code.…This code declares several variable types.…Including an empty character buffer.…The sizeof operator is then used to calculate…how much storage is set aside.…Build and run this code.…On my computer, it shows that 141 bytes…of storage were set aside.…
Even though the storage is never used,…save for the total variable, it's still set aside.…
Author
Released
10/10/2014- Understanding a C program
- Adding comments
- Using escape characters
- Working with values and placeholders
- Introducing variables
- Making a decision with if
- Looping
- Adding functions
- Manipulating strings
- Building arrays
- Nesting structures
Skill Level Beginner
Duration
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Introduction
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Welcome46s
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Using the exercise files1m 20s
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1. Getting Started
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Programming overview3m 56s
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Configuring Code::Blocks3m 47s
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Compiling a sample program4m 59s
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2. Programming Basics
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Understanding a C program7m 43s
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Sending text to output2m 13s
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Adding comments to the code2m 26s
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Introducing variables7m 3s
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Using character I/O6m 24s
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Working with math7m 19s
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Making more calculations5m 34s
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3. Program Flow Control
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Looping with while8m 2s
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Nested loops4m 8s
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Adding a function6m 8s
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Passing values to a function2m 54s
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4. Intermediate C Language Concepts
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Manipulating strings6m 28s
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Building arrays6m 45s
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Understanding structures5m 3s
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Working with time functions5m 53s
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5. Advanced C Language Concepts
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Understanding variables5m 57s
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Creating pointer functions5m 36s
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Working with pointer arrays4m 21s
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Allocating memory3m 13s
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Building a linked list8m 5s
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Conclusion
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Next steps2m 11s
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Video: Allocating memory