Titlebook: C: A Software Engineering Approach; Peter A. Darnell,Philip E. Margolis Textbook 19912nd edition Springer-Verlag New York, Inc. 1991 ANSI

Mobile

morale

BOOM

膝蓋

C Essentials,fore you know everything. In this chapter, we describe the C essentials — what you need to know to write your first programs. To avoid getting bogged down in details, we gloss over some of the intricacies of the C language in this chapter. In later chapters, we provide a more thorough discussion of

PSA-velocity

Scalar Data Types,tively complex objects instead of the more mundane objects that the computer manipulates at its lowest level. You can deal with integers, characters, and floating-point numbers, all of which are familiar entities. At the bit and byte level, the computer may not understand these concepts. It is up to

atrophy

Control Flow,n which they appeared without any branching or repetition. Most programming problems are not so simple. In fact, the great power of programming languages stems from their ability to instruct the computer to perform the same task repeatedly, or to perform a different task if parameters change. In hig

stress-response

Operators and Expressions,ady seen a number of C operators in the preceding chapters, such as + (addition), / (division), < (less than), and = (assignment). The operator symbols are composed of one or more special characters. If an operator consists of more than one character, you must enter the characters without any interv

outskirts

Storage Classes,rites an isolated piece of the program. When everyone is finished, all the pieces are linked together to form the complete program. For this process to work, there must be a mechanism to ensure that variables declared by one programmer don’t conflict with unrelated variables of the same name declare

輕浮思想

Structures and Unions,service groups of mixed data, you need to use an aggregate type called a .. (Other languages, such as Pascal, call this data type a . Another aggregate type, called a . (similar to a . in Pascal), enables you to interpret the same memory locations in different ways.

Presbyopia

The C Preprocessor,vious chapters, we introduced two preprocessor directives—the . command for naming a constant and the . command for including additional source files. This chapter discusses both of these directives in greater detail and also describes other preprocessor directives that have not been mentioned yet.