Chapter 1
mental synthesis of C Programs:
Documentation office: The documentation section consists of a set of comment lines giving the details of the program same(p) who created the program,date,its purpose etc….
Link ingredient: The link section provides instructions to the compiling program to link functions from the system library.e.g., #include,#include.
Definition Section: Definition section defines every symbolic constants.
#define PI 3.14
Global Declaration Section: variants which can be apply by all the functions in a program is cognise as global variable and is declared outside all the functions.
The global variables are declared in the global solution section.
Main function: Every C program must(prenominal) prepare one main function section. The program exploit begins here.
Sub program section: Contains all the social occasionr-defined functions that are called in the main function.
Chapter 2
Tokens: In a passage of text, individual haggling and punctuation marks are called tokens. Similarly in a C program the smallest individual units are known as C tokens.
Keywords: Keywords are the tokens in C program that have a fixed meaning that cannot be changed.
Keywords are silent by the system and user cant use it as an identifier.All keywords must be written in trim case. E.g. float, while,goto,int,if,break…..
Identifiers: Identifiers refer to the names of variables, functions and arrays. These are user-defined names. E.g i,main(),str[10]…..
Constants: Constants refer to fixed determine that do not change during the execution of a program.
varying: A variable is a data name that may be used to store a data value. contrary constants a variables data can change.
Variable Declaration:
Declaration of a variable does two things:
1. It tells compiler what the name is.
2. It specifies what type of data the variable will hold.
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