Monday, March 30, 2020
Structure In C
Matoshri Asarabai
Polytechnic, EklahareNashik
______________________________________________
Topics: Structure Using C
What is Structure
Structure in c is a user-defined data type that
enables us to store the collection of different data types. Each element of a
structure is called a member.
struct keyword
is used to define the structure. Let's see the syntax to define the structure
in c.
1. struct structure_name
2. {
3. data_type member1;
4. data_type member2;
5. .
6. .
7. data_type memeberN;
8. };
Let's see the example to define a structure for
an entity employee in c.
1. struct employee
2. { int id;
3. char name[20];
4. float salary;
5. };
Here, struct is the keyword; employee is
the name of the structure; id, name, and salary are
the members or fields of the structure.
Declaring
structure variable
declare variable at the time of defining
the structure.
1. struct employee
2. { int id;
3. char name[50];
4. float salary;
5. }e1,e2;
C
Structure example
1. #include<stdio.h>
2. #include <string.h>
3. struct employee
4. { int id;
5. char name[50];
6. }e1; //declaring e1 variable for structure
7. int main( )
8. {
9. //store first employee information
10.
e1.id=101;
11.
strcpy(e1.name, "Sonoo Jaiswal");//copying string into char array
12.
//printing first employee information
13.
printf( "employee 1 id : %d\n", e1.id);
14.
printf( "employee 1 name : %s\n", e1.name);
15.
return 0;
16.
}
Output:
employee 1 id : 101
employee 1 name : Sonoo
Jaiswal
Functions In C : Important Concept
Topic: Functions In C
A function is a group of
statements that together perform a task. Every C program has at least one
function, which is main(), and all the most trivial programs can
define additional functions.
You can divide up your code into separate functions. How you
divide up your code among different functions is up to you, but logically the
division is such that each
A function declaration tells the compiler about a
function's name, return type, and parameters. A function definition provides
the actual body of the function.
The C standard library provides numerous built-in functions that
your program can call. For example, strcat() to concatenate
two strings
Defining
a Function
The general form of a function definition in C
programming language is as follows −
return_type
function_name( parameter list ) {
body of the function
}
A function definition in C programming consists of a function
header and a function body. Here are all the parts of a
function −
·
Return Type − A function may return a value. The return_type is
the data type of the value the function returns. Some functions perform the
desired operations without returning a value. In this case, the return_type is
the keyword void.
·
Function Name − This is the actual name of the function. The function name
and the parameter list together constitute the function signature.
·
Parameters − A parameter is like a placeholder. When a function is
invoked, you pass a value to the parameter. This value is referred to as actual
parameter or argument. The parameter list refers to the type, order, and number
of the parameters of a function. Parameters are optional; that is, a function
may contain no parameters.
Subscribe to:
Comments (Atom)