Lecture Notes in Computer Fundamentals and Programming PDF

Preview

Summary

LECTURE NOTES IN COMPUTER FUNDAMENTALS AND PROGRAMMING [ C++ ] Computer Programming – a process of implementing the algorithm using a language that computer can understand. Indentifiers – “representations”  Letters (a – z, A – Z)  Digits (0 – 9)  Underscore ( _ ) An identifier must begin with a l...

Description

LECTURE NOTES IN COMPUTER FUNDAMENTALS AND PROGRAMMING [ C++ ]

Computer Programming – a process of implementing the algorithm using a language that computer can understand. Indentifiers – “representations” 

Letters (a – z, A – Z)



Digits (0 – 9)



Underscore ( _ )

An identifier must begin with a letter or an underscore. [C++ is case sensitive] Variable – the symbolic name for a location of memory referenced by an identifier that contains data that may change during execution. Data Types: 

Char – one alphanumerical character [‘a’, ‘!’, ‘C’, ‘1’]



Int – positive or negative integers with/ without a sign [25, -100, 0]



Float – integer part and a fractional part [25.00, -3.75, 2.523]



String – used to hold data containing one or more than one character Example: string abc = “Hello”; char abc[5] = “Hello”;

BASIC STRUCTURE OF A C++ PROGRAM 1. Preprocessor Directives – information of the program needs 2. Heading –function by definition to return a value 3. Main Function – consists of named constant declarations, variable declarations and executable statements

BASIC INPUT/OUTPUT IN C++ General Form: cin>>variable1>>variable2>>…; cout...