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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Based on what you've learned so far, you can write a C program that calls the integer_add() function to calculate an addition and then print out the result on the screen. An example of such a program is demonstrated in Listing 3.2.

 

C প্রোগ্রামিংয়ের Statements সম্পর্কে আলোচনা

Statements

In the C language, a statement is a complete instruction, ending with a semicolon. In many cases, you can turn an expression into a statement by simply adding a semicolon at the end of the expression.

For instance, the following

C প্রোগ্রামিং এর বিভিন্ন ধরনের Expressions এর আলোচনা

Expressions
An expression is a combination of constants, variables, and operators that are used to denote computations.

For instance, the following:

(2 + 3) * 10

Exercises : Answer these Questions

After Reading and Understanding the Chapter 03 : The Essentials of C Programs, please give the answer of following Questions. if you able to answer these question correctly then please proceed to next chapter which is on Data Types and Names in C programming.