easymeanseasy

type casting or type conversion  allows us to convert one data types into another.for type casting cast operator is required. Syntax:--      (type)expression or value; Example:       int f =9/4; //without type casting       o/p=2       float f=(float)9/4;  //with type casting       o/p=2.3 Type conversion are of two types: 1)Implicit Type Conversion:-  it is also known as automatic type conversion.When the type conversion is performed automatically by the compiler,such type of conversion is known as implicit type conversion. 2)Explicit Type Conversion:-  the type conversion performed by the programmer is known as explicit type conversion.which is done by cast operator as above mentioned.

Definition:-                 Union is similar to structure, except it allows you to define the variable that share storage spaces.Defining a means creating a new data types. How use union:-                       when we create a structure by using struct keyword, now making a union we just replace the keyword struct with the keyword union , other syntax will be same. Difference  between Structure  and Union:- the only difference between them is in memory. NOTE:-  union is used for low level programming but structure mostly used for high level programming. Program to access union:- """SHARE IT WITH YOUR FRIENDS IF HE DID NOT KNOW""""

Definition:- Defining a structure means creating a new datatypes It gives a way to grouping a variable Structure is a collection of dissimilar elements while array is for similar  it can be defined outside or inside the function struct keyword is used for defining a structure   Syntax:            struct variable_name          {    declaration of member variable   };                                              at last ; semicolon insert  Example:   1)   struct date{     //define outside the function         int d,m,y;  //member variable         };   or }d2;  where d2 is the variable of structure         main()         {...

String is a sequence of character which terminated by null character("\0"). String basically a 1-D array of characters. Size of string is one more than the character in string, for example :"hello" 5 character but size is 6. Example:- declare and initialize an string, which is same as array NOTE:- printf("%c",hi[i]);  print character printf("%s",hi);  print whole string   Functions Related to String:- ///click here to see the use of every function///

Dynamic memory allocation cannot be performed without using pointers, so it is necessary to learn a pointers. A pointer is a variable which holds the address of the another variable. Pointer is also declared as other variable declared, but it use a asterisk(*) symbol, to represent that it is a pointer. Syntax:- data_types *variable_name; Example:-  int *p; // integer pointer Note:-  A pointer can hold the address of that variable, which is same as pointer data types,i.e data types of pointer variable=data types of other variable.           Every variable is a memory location, and every memory location has its own address which can be accessed by using ampersand(&) operator. Program:-  to print the address of a variable:  Use Pointer:-  define a pointer variable assign the address of the other variable into pointer variable access the value at the address, from the pointer variable.It is done by using unary(*) ope...

DEFINITION:-  Storage class define the scope(visibilty) and life time of a variables or functions within a C program.Storage class are associated with the variables for describing the features of any variables or functions. There are 4 types of storage classes: auto:-   auto is the default storage class for all local variable(i.e the variable inside function).auto keyword is used to define the storage classes. register :-   register is used to define the local variables that should be stored in a register instead of RAM(random access memory) , this means that unary operator (& or reference) can't applied.Register variables work fast than the variable stored in RAM.Register variable are used for looping. static:-   it is the default storage classes for global variables.global static variable can be accessed in any part of the program.The default value is assigned 0 by the compiler.static keyword is used to define the static variable. ...

DEF:- Array is a linear collection of similar elements Array is also known as subscript value Array is a group of value when there is a lot of data then array is required Array are the derived data types in c language which can store the primitive data types of type int, float, char etc. in array each element have index, through index each element can be accessed randomly. Advantage of Array:-- Code Optimization:- less code to access the data Ease of traversing:- by using loop we can traverse the element of array Ease of sorting:- to sort the array only few codes are written randomly access:- any element access randomly Disadvantage of Array:- Fixed size:- the size of array is defined when we declared an array, which cannot be change.Array in c are not dynamically like linked list etc. Declaration of Array:- An Array can be declared such as we declare the function , only difference is ,In function argument is passed but in array size is declared [...