Skip to main content

Fundamentals of Programming

Fundamentals of C and C++:

Every Programming Languages have some basic rules that should be followed to become a good programmer. Some of them are as follows.

Rules for Declaring Variable Names:

  1. Variable name can be any combination of 1 to 31 alphabets, digits or underscore.
  2. The first character of variable name should be an alphabet.
  3. Commas, blanks or any other special symbols are not allowed in variable name.

 

C/C++ Keywords:

int    double    auto    char    if    else    long    switch    case    enum    register    typedef    struct    extern    return    union    const    float    short    unsigned    continue    for    signed    void    default    goto    sizeof    volatile    do    break    static    while  new

Integer Float Conversions:

There are some Rules that should be kept in mind before using mathematic operations on different data types. They are as follows.
  1.  An arithmetic operation between an integer and integer always result in integer.
  2.  An arithmetic operation between a float and float always result in float.
  3.  An arithmetic operation between an integer and float always result in float.

Priority:

In programming languages, every symbol has its own importance and precedence over one another. Some of them are as follows.
  1.  *  /  %
  2. +  –
  3. =

* have highest precedence and then /,%,+,-,= these shold be kept in mind before using them in athematic operations.

Comments

Post a Comment

Popular posts from this blog

Pointers

Pointers: A pointer is a variable whose value is a memory address. A pointer contains the memory address of a variable that, in turn, contains a specific value. In this sense, a variable name directly references a value, and a pointer indirectly references a value. Syntax: type * variable ; Interpretation: The value of the pointer variable ptr is a memory address. A data item whose address is stored in this variable must be of the specified type. Dynamic Memory Management: C/C++ enables programmers to control the allocation and deallocation of memory in a program for any built in or user defined type. The ability for a program to obtain more memory space at execution time to hold new nodes, and to release space no longer needed is known as dynamic memory management. Syntax: int *num = (int *)malloc(sizeof (int)*numCount); or int *ptr = (int *)calloc(numCount, sizeof (int)); /* returns a pointer to a section of memory just large enough to hold the integers, whose q...
Post a Comment
Read more

Single LinkList in Java

Linked List: Linked List contains a sequence nodes which are linked together. Each node contains a connection to another link and data. Linked list is the second most-used data structure after array. Following are the important terms to understand the concept of Linked List. Link − Each link of a linked list can store a data called an element. Next − Each link of a linked list contains a link to the next link called Next. LinkedList − A Linked List contains the connection link to the first link called First. Types of Linked List: Following are the various types of linked list. Simple Linked List − Item navigation is forward only. Doubly Linked List − Items can be navigated forward and backward. Circular Linked List − Last item contains link of the first element as next and the first element has a link to the last element as previous. Basic Operations: Insert:  Inserts at tail,  specific index. Delete: Deletes from the tail.  specific index. ...
Post a Comment
Read more

Object Oriented Programming (OOP)

Object Oriented Programming: Object Oriented Programming (OOP) is a programming concept which used in the modern programming world. Languages like Java, C++,  and Python support Object Oriented Programming (OOP). It works on the principle that objects are the most important part of a program. In OOP we think in terms of objects and every object has its attributes (properties) and a state (behavior/functions). Object Oriented Programming (OOP) is a technique of system modeling and its main purpose is to understand the product before developing it and manipulating these objects to achieve a specific task.   Pillars of Object Oriented Language (OOP): There are four basic principles of Object Oriented Language (OOP). Inheritance Polymorphism Data Encapsulation Abstraction WHY is Object Oriented Language (OOP) NEEDED? Problems with Procedural Languages: Functions have unrestricted access to global data Unrelated Functions and data. Before Object Oriente...
Post a Comment
Read more