প্রোগ্রাম Controls করার পদ্ধতি ও তার সঠিক ব্যবহার

Submitted by administrator on Mon, 01/02/2012 - 15:44

Chapter 10 - Getting Controls

 

In Chapter 7, "Doing the Same Thing Over and Over," you learned to use the for, while, and do-while statements to do the same things over and over. These three statements can be grouped into the looping category that is a part of the control flow statements in C.

In this lesson you'll learn about the statements that belong to another group of control flow statements—conditional branching (or jumping), such as

    The if statement
    The if-else statement
    The switch statement
    The break statement
    The continue statement
    The goto statement



Summary

In this lesson you've learned the following:

  •     An important task of a program is to instruct the computer to jump to a different portion of the code according to the specified branch conditions.
  •     The if statement is a very important statement for conditional branching in C.
  •     The if statement can be nested for making a series of decisions in your program.
  •     The if-else statement is an expansion of the if statement.
  •     The switch statement helps you to keep your program more readable when there are more than just a couple decisions to be made in your code.
  •     The case and default keywords, followed by a colon (:) and an integral value, are used in the switch statement as labels.
  •     The break statement can be used to exit the switch construct or a loop (usually, an infinite loop).
  •     The continue statement is used to let you stay within a loop while skipping over some statements.
  •     The goto statement enables the computer to jump to some other spot in your computer. Using this statement is not recommended because it may cause your program to be unreliable and hard to debug.


 

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মডুলার C প্রোগ্রামিং (Modular C Programming)

কেবল মাত্র একটি ফাংশন দিয়ে কোনো বড়ো জটিল সমস্যা সমাধানের চেষ্টা করা ভাল প্রোগ্রামিংয়ের পদ্ধতি নয়। সঠিক পদ্ধতি হ'ল সমস্যাটিকে কয়েকটি ছোট ছোট এবং সরল টুকরো করে ফেলা যাতে তা আরও বিশদে বোঝা যায় । তারপরে এই ছোট এবং সরল সমস্যাগুলি সমাধান করার জন্য ছোট ছোট ফাংশন ব্লক তৈরি করা এবং পরে সেগুলি নিয়মানুযায়ী সংযোজিত করা ।

Programming Style

Programming Style

In this section, I'd like to briefly highlight some points that will help you write clean programs that can easily be read, understood, and maintained.

Exercises : Answer the following Question

To help solidify your understanding of this hour's lesson, you are encouraged to answer the quiz questions and finish the exercises provided in the Workshop before you move to the next lesson.

Question and Answer

    Q Is the C preprocessor part of the C compiler?

    A No. The C preprocessor is not part of the C compiler. With its own line-oriented grammar and syntax, the C preprocessor runs before the compiler in order to handle named constants, macros, and inclusion of files.

Compiling Your Code Under Conditions

Compiling Your Code Under Conditions

You can select portions of your C program that you want to compile by using a set of preprocessor directives. This is useful, especially when you're testing a piece of new code or debugging a portion of code.