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C programming assignment help topics
• Writing, compiling, and debugging programs;
• C file structure; variables;
• Preprocessor macros;
• Multidimensional arrays, Pointers to pointers, stacks and queues
• Using and creating libraries, B-trees and priority queues
• Types, operators, expressions
• Returning from functions
• Functions and problem statements;
• Linked lists, trees
• Function pointers, hash table
• Arrays, Pointers, strings, sorting and searching algorithms
Some facts about C
• The predecessor of C was B language. It was available during the 1970s.
• C is used for applying most of the software.
• C programming language is the most popular and widely used programming language.
• The invention of C programming language was done write the UNIX operating system.
• The most well-known operating systems Linux and RDBMS MySQL is written in C language.
Uses of C programming language.
A C program can be created in three lines to millions of line with text files having extension “.c”. The codes of C language run as easily as that of assembly language and hence it was adopted for system development language. Some of the uses of C programming language are:
• Language compilers
• Operating systems
• Text editors
• Assemblers
• Network drivers
• Modern programs
• Databases
• Language interprets
• Utilities
• Print spoolers
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C program structure
A C program is a structured language. It consists of several parts which are important for writing a C program code. Some basic parts present in a C program are:
• Preprocessor commands
• Variables
• Expressions and statements
• Functions
• Comments.
Basic format used in the C program
• Tokens
A token is a key phrase, a continuous, an identifier, a symbol or a string literal.
• Semicolons
Semicolon is a statement terminator of a c program. Every assertion ends with semicolon which shows the end of a logical entity. An example is:
printf(“Hello, World! n”);
return 0;
The two lines are two different statement ended with a semicolon.
• Comments
Comments are the assisting texts of the c statement which are ignored by the C compiler. Comments starts with /* and ends with */ as show in the following example.
• Identifiers
Identifier is the name that is used for the identification of a function, a variable, or any other item. An identifier starts with a letter or ‘_’ which is followed by a zero, digits and underscores. Punctuation is not allowed in C characters like $, @, and % in the identifiers.
• Keywords
Some of the keywords that are reserved words used in C are:
• auto
• long
• break
• register
• typedef
• case
• return
• extern
• char
• int
• _Packed
• float
• Whitespace
A blank line which the C compiler fully neglects is the line which consists of only whitespace maybe with a comment. Whitespace is used to describe the tabs, blanks, comments and newline characters in C. the use of whitespace is to separate one part of a statement from another. It allows the recognition of the beginnings and endings of one element in a statement by the compiler.
Types of data
The data in C can be classified into four types.
• Basic type: These are the arithmetic data type. These are additional categorized into two groups- integer type data and floating point type data.
• Enumerated type: These data are arithmetic data which are used to determine variables which can only assign discrete integer values in the program.
• Void type: The void signifies that there is no value available.
• Derived data: derived data includes- array, pointer, structure, function and union types of data.
Variables
Variables are the name provided to the storage area that can be altered by the programs. The variables are of specific type, which determines the layout and size of memory of the variable. Variable names can include digits, letters and underscore characters however it must start with an underscore or a letter. As c is case sensitive, uppercase and lowercase letters are distinct. Some basic types of variables are int, char, double, float and void.
The variable description commands the compiler how much storage is required to create the variable and where it will be stored.
The variable statement tells the compiler that a variable exists with the given name and type, so that the compiler can proceed to compile without requiring all details about the variable.
Constants and literals
The fixed values which are not modified during the performance of a program are referred to as constants. Constants are also known as literals. Constants can be of any data type such as a floating constant, an integer constant; character constant etc. constants are similar to the regular variables except the fact that their values cannot be changed once they are already defined.
Operators
Operators are the symbols that control the compiler to perform specific logical and mathematical functions. C language has the following types of operators that are used in writing the program statements.
• Relational operators: ==, !=, > , <, > =, <=
• Arithmetic operators: +, -, *, /, %, ++, —
• Bitwise operators: &, |, < gong0deng >
• Logical operators: &&, ||, !
• Misc operators: sizeof(), &, *, ? :
• Assignment operators: =, +=, -=, *=, /=, %=, < <=, > > =, &=, |=
Decision making
Decision-making structures are structures that are the conditions that are specific by the programmers along with the statements so that they are assessed by the programs to determine whether the statement is true or false. A typical decision making structure is given below:
Some of the statements provided by the c programming language are as follows:
