Online Test Banks
Score higher
See Online Test Banks
eLearning
Learning anything is easy
Browse Online Courses
Mobile Apps
Learning on the go
Explore Mobile Apps
Dummies Store
Shop for books and more
Start Shopping

C

View:  
Sorted by:  

How to Use Arrays and Functions Together in C Programming

In C programming, creating an array for use inside a function works just like creating an array for use inside the main() function: The array is declared, it’s initialized, and its elements are used. You [more…]

Basics of Character Manipulation Functions for C Programming

At the heart of any string of text is the char variable. With C programming, it’s a unique cubby hole, into which you stuff a value from 0 through 255. That value is represented visually as a character [more…]

Basics of String Functions for C Programming

Despite its nonvariable type classification, the C programming library doesn’t skimp on functions that manipulate strings. Just about anything you desire to do with a string can be done by using some of [more…]

How to Format with printf() in C Programming

The most popular output function in C programming has to be printf(). It’s everyone’s favorite. It’s one of the first functions you learn in C. And as one of the most complex, it’s one of the functions [more…]

How to Use Stream Input in C Programming

The basic input/output functions in C are not interactive, which means that they don’t sit and wait for you to type text at the keyboard. That’s the way you expect to use a computer program: You type input [more…]

How to Conjure a Terminal Window in C Programming

Whether you’re using Windows, Mac OS X, Linux, or a Unix variant, you can still bring forth a terminal window with C programming, in which you can witness the awesome starkness of the command prompt. It’s [more…]

How to Use the main() Function Arguments in C Programming

Back in the old days, programs featured command-line options or switches. For example, to compile and link a C program, you would type something like this: [more…]

How to Quit One Program and Run Another in C Programming

In C programming, information can get into your program via command-line arguments. Information gets back out thanks to the return statement. That’s the primary way, but not the only way, a program bails [more…]

How to Make Static Variables in C Programming

In C programming, variables used within a function are local to that function: Their values are used and then discarded when the function is done. Don’t Give Me No [more…]

Basics of Global Variables in C Programming

Sometimes in C programming, a variable must be like cellular phone service: available everywhere. The variable also can be used by any function at any time. This type of variable could be called a [more…]

Basics of Binary for C Programming

Happily, you don’t have to program any digital device by writing low-level code, flipping switches, or soldering wires. That’s because today’s C programming happens at a higher level. But still, deep within [more…]

How to Use the Bitwise | Operator in C Programming

You’re already familiar with C programming’s decision-making logical operators: && for AND and || for OR. In the && evaluation, both items must be true for the statement to be evaluated as true; for the [more…]

How to Use the Bitwise & Operator in C Programming

Like the bitwise OR operator in C programming, the bitwise AND operator, &, also affects bits in a byte. Unlike OR, which sets bits, the AND operation masks bit values. It’s easier to show you a program [more…]

How to Use the Bitwise Exclusive OR (XOR) Operator in C Programming

XOR is the exclusive OR operator in C programming, yet another bitwise logical operator. And to answer your most pressing question, you pronounce XOR like “zor.” It’s the perfect evil name from bad science [more…]

How to Use the Bitwise Exclusive OR (XOR) Operator in C Programming

XOR is the exclusive OR operator in C programming, yet another bitwise logical operator. And to answer your most pressing question, you pronounce XOR like “zor.” It’s the perfect evil name from bad science [more…]

How to Shift Binary Values in C Programming

The C programming language features two binary operators that perform the equivalent operation of “Everyone move one step to the left (or right).” The << and >> operators shift bits in value, marching [more…]

How to Use Hex with Binary for C Programming

Face it: No one, not even a C programmer, wants to count bits in a binary number. No one. Perhaps some nerd somewhere can tell you that 10110001 is really the value 177, but most programmers can’t. What [more…]

Basics of Variable Storage for C Programming

Digital storage is measured in bytes. Though displayed in the C programming language, all the information stored inside memory is simply a mass of data, bits piled upon bits, bytes upon bytes. It’s up [more…]

How to Check a Variable’s Location in C Programming

In C programming, a variable’s type and size are uncovered first by declaring that variable as a specific type, but also by using the sizeof keyword. The second description of a variable, its contents, [more…]

How to Work with Pointers in C Programming

The pointer’s power in C programming comes from both its split personality as well as from its ability to change values, such as a variable.

In More Pointer Fun, three char variables are declared at Line [more…]

C Programming: How to Work Pointer Math in an Array

What happens when you increment a pointer in C programming? Say that pointer variable dave references a variable at memory address 0x8000. If so, consider this statement: [more…]

How to Use Pointers and Strings in C Programming

The C programming language lacks a string variable, but it does have the char array, which is effectively the same thing. As an array, a string in C can be completely twisted, torqued, and abused by using [more…]

How to Build an Array of Pointers in C Programming

An array of pointers would be an array that holds memory locations. Such a construction is often necessary in the C programming language. Remember that an array of pointers is really an array of strings [more…]

C Programming: How to Use Pointers in Functions

A pointer is a type of variable. As such, it can easily be flung off to a function in C programming. Even more thrilling, a pointer can wander back from a function as a return value. Oftentimes, these [more…]

How to Free Memory in C Programming

It’s not as much of an issue as it was back in the microcomputer era, but wasting memory should still be a concern for any C programmer. Though you can brace yourself for 1,024 characters of input, odds [more…]

Listings:back...101-125126-147

Sign Up for RSS Feeds

Computers & Software
Win $500. Easy. Enter to win now.

Inside Dummies.com

Dummies.com Sweepstakes

Win $500. Easy.