Here is a slightly more complicated drawing program. It will scale a car. You get to choose a scale between 1 and 4. Most home ed families have a minivan. Your challenge is to see if you can change the pattern into a minivan. [Read more...]

Here is a follow-up drawing program similar to the draw X program. After looking at these two programs, try scaling another letter. [Read more...]

Usually, in all of programming courses I taught, I would at some point in the course take about 15 minutes of the beginning of the class to explain something to them. For those who had me for a half dozen or more courses, this talk might have gotten a bit old. But, even then, it was worthwhile for them to remember the standpoint I was teaching from.

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In this tutorial, I’ll decribed most of the commanly used operators in C. There are 2 types of operators: logical and arithematic. Logical operations produce a value of true or false. Arithematic operations return a calculated value.
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One of the problems programmers face is dealing with a large number of the same datatype. An example of this is this web page. If you view the page source you will see that behind the scenes a web page is a bunch of text. In talking about datatypes, I introduced the char datatype which holds 1 character. But this page consists of a few thousand characters. As a programmer, you would not want to have to create a variable for each character in the page. Programming would be a horribly inefficient means of processing a web page.
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This is the first of 2 posts on conditions and iterations. Essentially this means conditional execution and repetitive operations. Using arrays and a variable to index into the array we can process an entire array without writing code which specifically accesses each element in the array.
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This is part 2 of 2 tutorials on conditions and iterations. Essentially this means conditional execution and repetitive operations. Using arrays and a variable to index into the array we can process an entire array without writing code which specifically accesses each element in the array.
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In this code sample, I’ve placed lots of comments. To see how well I’ve done at commenting, I’ll leave it to you to ask any questions in the forums. [Read more...]

In the The Traditional First Program I talked about the main() function returning an integer to the operating system. int is a datatype. In C, there are a few basic datatypes. Before I talk about those, I’ll explain a bit about computers and memory.
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