- The for key word is used for creating loops in your C code. Unlike a wild loop, the for loop is set up on a single line, which makes it more cryptic, but it remains a popular and perhaps more traditional type of loop. In this movie, I present the for loop. You'll see how to set up the loop and understand it's parts. A for loop is presented at line seven. The loops statement contains three parts, each separated by a semi-colon. First comes the initialization, this statement is x=0, which is an assignment.
It's made at the start of the loop. Second comes the looping condition. The loop repeats as long as this condition is true, x<10 Finally the iteration statement, each time the loop repeats, this statement is executed. Here the value of x is incremented. The semi-colon doesn't follow the for statement's parenthesis. Instead, the semi-colon follows a single looping statement, as shown here at line eight.
or a series of statements are enclosed in curly brackets. Build and run this code. The values zero through nine are output. This is actually typical for a C loop. In C programming, you start counting a zero not one. Humans start counting at one so to fix the loop for the human's eyes change the printf statement to read x + 1. This modification doesn't change the value of x only the output, save, build, and run.
Now that you've seen the basics of the loop, you need to practice some of your skills. You need to practice three challenges. You need to modify this code so that the loop displays values one through 20, the other one is to display even numbers from two to 20, and finally, to display values from 10 down to one. That's three challenges in one.
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: Repeating chunks of code with for