Book Image

Learn C Programming

By : Jeff Szuhay
Book Image

Learn C Programming

By: Jeff Szuhay

Overview of this book

C is a powerful general-purpose programming language that is excellent for beginners to learn. This book will introduce you to computer programming and software development using C. If you're an experienced developer, this book will help you to become familiar with the C programming language. This C programming book takes you through basic programming concepts and shows you how to implement them in C. Throughout the book, you'll create and run programs that make use of one or more C concepts, such as program structure with functions, data types, and conditional statements. You'll also see how to use looping and iteration, arrays, pointers, and strings. As you make progress, you'll cover code documentation, testing and validation methods, basic input/output, and how to write complete programs in C. By the end of the book, you'll have developed basic programming skills in C, that you can apply to other programming languages and will develop a solid foundation for you to advance as a programmer.
Table of Contents (33 chapters)
Section 1: C Fundamentals
Section 2: Complex Data Types
Section 3: Memory Manipulation
Section 4: Input and Output
Section 5: Building Blocks for Larger Programs

Using format specifiers for signed integers

Signed integers include integers that can have negative as well as positive values. The next example program is signedInt.c, and it begins as follows:

#include <stdio.h>
int main( void ) {
int smallInt = 12;
int largeInt = 0x7fffffff; // int32 max
int negativeInt = -smallInt;
unsigned anUnsigned = 130;
long long int reallyLargeInt = 0x7fffffffffffffff; // int64 max

// the other code snippets go here.

The values of smallInt, largeInt, negativeInt, anUnsigned, and reallyLargeInt will be printed using various field, precision, and alignment modifiers. Notice that largeInt is given a hexadecimal value that is the largest positive value a 32-bit integer can hold. Likewise, reallyLargeInit is given a hexadecimal value that is the largest positive value a 64-bit integer can hold. What value is printed if the first 7 number in each value is changed to f?