Skip to main content

Why we use function in c

Function is much important when we have to do a long project. Let we have a math function (sum, sub,mul etc.) in our project we need the same calculation several times. if we have a function. We can do it by a single line (by calling the function). Otherwise we will have to rewrite the same code of calculation again. And function got arbitrarily long.
Above this reason we use function in C program and we don’t write all codes in main () function.

Comments

Popular posts from this blog

Object-Oriented Programming and JAVA Programming Language

  Object-Oriented Programming and:   Object-oriented programming (OOP) is a programming paradigm using "objects" – data structures consisting of data fields and methods together with their interactions – to design applications and computer programs. Programming techniques may include features such as data abstraction, encapsulation, messaging, modularity, olymorphism, and inheritance. Many modern programming languages now support OOP, at least as an option. JAVA Programming Language: Object-oriented programming is at the core of Java. In fact, all Java programs are object-oriented, this isn’t an option the way that it is in C++, for example. OOP is so integral to Java that you must understand its basic principles before you can write even simple Java programs. Therefore, this chapter begins with a discussion of the theoretical aspects of OOP.

Read or input form user in Java using BufferedReader

 BufferedReader use to read text from a character-input stream, buffering characters so as to provide for the efficient reading of characters, arrays, and lines.The buffer size may be specified, or the default size may be used. The default is large enough for most purposes. In Java  BufferedReader is a efficient method to read an input. Here given a short example to read a string from user and print it: package palindrome; import java.io.BufferedReader; import java.io.InputStreamReader; public class  inputExample   {     public static void main(String[] args) throws Exception {    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));     String s = new String();       s =br.readLine();     System.out.println(s);     } }

Difference between Scanner vs. BufferedReader

BufferedReader Read text from a character-input stream, buffering characters so as to provide for the efficient reading of characters, arrays, and lines. The buffer size may be specified, or the default size may be used. The default is large enough for most purposes. Where Scanner is a simple text scanner which can parse primitive types and strings using regular expressions. A Scanner breaks its input into tokens using a delimiter pattern, which by default matches whitespace. The resulting tokens may then be converted into values of different types using the various next methods. Scanner is used for parsing tokens from the contents of the stream while BufferedReader just reads the stream and does not do any special parsing. In currently latest JDK6 release/build, the Scanner has a littler buffer (1KB char buffer) as opposed to the BufferedReader (8KB byte buffer), but it's more than enough.As to the choice, use the Scanner if you want to parse the file, use the Buffered