Computer Languages

About Structure:- Arrays allow to define a type of variables that can hold several data items of the same kind. Similarly, structure is another user-defined data type available in C that allows to combine data items of different kinds. Let Us Take An Real Life Example: If We want to track the following attributes about each book: 1.Title (May Be String) 2.Author(May Be String) 3.Subject (May Be String) 4.Book ID (Integer Type) Than We Have to Define A Structure Variable That Can Take This Different Type Of Data-Types. Syntax For Defining A Structure:- struct [structure_Name] { member definition; member definition; ... member definition; } [one or more structure variables]; For Information of Student The Definition of structure Will Be: struct student_data {  char name[20];  int roll_Number;  int standered;  char father's_name[20]; } std1; //structure Vaiable   Accesing Structure Members:- The Members of structure variable accesed by Dot(.) Operator.. Let Us Take...

Use Of Pointer In C Language:- We Have already Discussed About Pointe rs In Previous Post. This is the most important and useful IN C programming . The Uses Of Pointers In C Language Is Given below:- 1.Array of pointers:- We Can Use Collection Of Pointer by using   An Array Of Pointers. 2.Pointer to pointer:- C allows you to have pointer on a pointer. 3.Passing pointers to functions:-  We Pass Pointer As  Arguments. Now We Will know About These Uses Of Pointers One By One:- 1.Array of pointers:- In This Method We Declare An array For Storing Pointers: declaration of an array of pointers to an integer:- int *ptr[MIN]; declaration of an array of pointers to an float:- flot *ptr[MIN]; declaration of an array of pointers to a CHAR:- char *ptr[]; Example Program:- THIS PROGRAM DEMONSTRATES ARRAY OF POINTER, WE SIMPLY PRINT ADDRESS AND VALUE OF POINTERS #include <stdio.h> const int MAX = 5; int main () { int *ptr; int var[] = {10, 100, 200,400,500}; int i; ptr=var; for (...

          Introduction To Pointer: About Pointer:- *POINTER is a variable whose value is the address of another variable *Every variable is a memory location and every memory location  has its address defined which can be accessed using ampersand(&)  operator,which denotes an address in memory *Dynamic memory allocation,cannot be performed without using pointers. Let's start learning them in simple and easy steps. pointer variable declaration:- data_type *variable_name; *The asterisk ( * ) used to declare a pointer is the same asterisk used for   multiplication. some of the valid pointer declarations:- int *in;             //pointer to an intege r  double *db;  // pointer to a double  float *fl;         //  pointer to a float  char *chr    //pointer to a character   *The only difference between pointers of different data types is the data type of the va...

Two Dimensional Array :- * It Is The Combination Of Two One Dimensional Array * It Is Used To Implement Matrix Operation . *A two-dimensional array can be considered as a table which  will have 'a' number of rows and'b'number of columns. Declaration Of Two Dimensional Array:-   data_type Array_name [size of row][size of column]; For Example:- int matrix[3][4]; in above example we will store a matrix of 3*3. This Will Cleared From Following Figure:- *It can be represented a[i][j].where i and j represents  row and column respectively. Initialization Of Two Dimensional Array:- let us consider an array "float a[3][3]"then it will be initialized float a[3][3]={                {1.2,2.3,4.3} //initializers for row indexed by 0                {2.1,2.2,2.3} //initializers for row indexed by 1                {3.1,3.4,3.6} //initializers for row indexed by 2 ...

Introduction To Array: *Array Is A Type Of Data Structure Which Store Collection of Data Of  Same Type.Which Can Be Integer Float Or Character. *All arrays consist of contiguous memory locations. *The lowest address corresponds to the first element and the highest  address to the last element. Declaration Of Array:- It Consist up of 3 part :- 1.Data Type  2.Array Name 3.Size Of Array General Syntax:-                                                      data_type Array_name[size_of_array]; For Example:-  int marks[20]; in example datatype of array is int and name is marks and size is 20. * It Is Called Single Dimensional Array * the Array Size Must be Integer And it   must be greater than zero. Initialization Of Array: *We initialize an array in C either one by one or using a single statement           ...

Calling Method In C Language:- As We Already See That Any Function has Some Arguments Or void If We Use Variable As Argument Then It Is Called FORMAL PARAMETERS. *Formal parameters behave like other local variables inside the function  and are created upon entry into the function and destroyed upon exit. In C Language there are two ways in which arguments can be passed to a function:- 1)Call by value:-      (using value) 2)Call by reference:-  (using pointer) Now We Will See One By One These Arguments By Taking Suitable Example: 1)Call by value:-  *In This Method actual value copies to formal parameter: *Due To That changes made to the parameter inside the function  have no effect on the argument. This will cleared by following example:- Example Program:- //in this program we swap two variable using third variable: #include <stdio.h> /* function declaration */ void swapping(int a, int b); int main () { /* local variable definition */ int x =...