Skip to main content

Function definition in C programming

By
A function definition is a group of statements that is executed when it is called from some point of the program. The general syntax is
return_type function_name (parameter1, parameter2, ....., parametern)
{ - - - - -
statements ;
- - - - -
}

Where,
􀂃 return_type is the data type specifier of data returned by the function.
􀂃 function_name is the identifier by which it will be possible to call the function.
􀂃 Parameters (as many as needed) : Each parameter consists of a data type specifier followed by an identifier like any regular variable declaration. (for eg: int x) and which acts within the function as a regular local variable. They allow to pass arguments to the function when it is called. The different parameters are separated by commas.
ô€‚ƒ Statements is the function’s body. It is a block of statements surrounded by braces{}.
􀂃The first line of the function definition is k/a function header.

#include<stdio.h>
int addition (int a, int b) /* function prototype */
main()
{ int 2 ;
2 = addition (5,3) ; /*function call */
printf (“The result is%d”z) ;
}
int addition(int a, int b) /* function header */
{ int r;
r = a+b
return r;
}
Output:

The result is 8
Labels:

Comments

Post a Comment

Popular posts from this blog

Object Oriented Programming

By
Object Oriented Programming Programming paradigm that represents the concept of "objects" that have data fields (attributes that describe the object) and associated procedures known as methods Programming methodology based on objects, instead of just functions and procedures Focuses on data rather than process As individual objects can be modified without affecting other aspects of the program, it is easier for programmers to structure and organize software programs Easier to update and change programs written in object-oriented languages Simula was the first object oriented programming language Eg: C++, Java, etc. Features of OOPS Objects Referred as instance of class Basic run-time entities in an object-oriented system a person, a place, a bank account, a table of data, etc can be an object They occupy space in memory that keeps its state  Each object contains data and code to manipulate the data  Classes Blue print or prototype  which ...
Post a Comment
Read more

Passing arrays to functions in C programming

By
Like any other variables, we can also pass entire array to a function. An array name can be named as an argument for the prototype declaration and in function header. When we call the function no need to subscript or square brackets. When we pass array that pass as a call by reference because the array name is address for that array. /* Program to illustrate passing array to function */ #include<stdio.h> void display(int) ; /* function prototype */ main( ) { int num[5] = {100, 20, 40, 15, 33, i ; clrscr( ) ; printf (“\n The content of array is \n”) ; for (i=0; i<5; i++) display (num[i]) ; /*Pass array element fo fun */ getch{ } ; } void display(int n) { printf (“\t%d”, n ) ; } Output:     The content of array is 100      20       40       15 3 /* Program to read 10 numbers from keyboard to store these num into array and then c...
Post a Comment
Read more

Recursive Function in C programming

By
             If a statement within the body of a function calls the same function, the function is called recursive function. Actually, recursion is a process by which a function calls itself repeatedly until some specified condition has been satisfied. This process is used for repetitive computations in which each action is stated in term of previous result. Many iterative or repetitive problems can be written in this form.                To solve a problem using recursive method, two conditions must be satisfied. They are: 1)       Problem could be written or defined in term of its previous result. 2)       Problem statement must include a stopping condition. /*   An example of recursive function to calculate factorial of a number.*/    #include<stdio.h>    #include<conio.h...
Post a Comment
Read more