C Programming Variables and Storage Classes Quiz
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C Programming Variables and Storage Classes Quiz

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Questions and Answers

What is the purpose of the code segment in an .exe file?

  • To store the compiled code of the program (correct)
  • To store local variables within functions
  • To store global and static variables
  • To store dynamically allocated memory

    • Where are variables with automatic storage class stored?

  • Code segment
  • Stack section (correct)
  • Heap section
  • Data section

    • What happens to the value of automatic variables once the control goes out of the block they're defined in?

  • They retain their value even outside the block
  • They stay unchanged
  • They are lost and re-initialized when the block is re-entered (correct)
  • They become global variables

    • Which storage class is the default for variables declared without a specific storage class?

    <p>Automatic</p> Signup and view all the answers

    Where do global and static variables get allocated memory?

    <p>Data section</p> Signup and view all the answers

    What is the scope of automatic variables in C programming?

    <p>Confined to the function or block in which they are declared</p> Signup and view all the answers

    What does the data type of a variable indicate?

    <p>The type of data that will be stored in the variable and the amount of memory allocated</p> Signup and view all the answers

    What best describes the scope of a variable?

    <p>The part of a program that can access a variable</p> Signup and view all the answers

    What determines if a variable has linkage?

    <p>The scope where the variable is declared</p> Signup and view all the answers

    What does a variable with external linkage mean?

    <p>It can be used anywhere in a multi-file program</p> Signup and view all the answers

    Which factor determines the storage duration or lifetime of a variable?

    <p>The duration up to which the variable exists</p> Signup and view all the answers

    What is different for variables declared with each storage class?

    <p>The initial value</p> Signup and view all the answers

    Study Notes

    Storage Classes in C Programming

    Code Segment in an .exe File

    • The code segment in an .exe file contains the machine code instructions that are executed by the CPU.

    Variables with Automatic Storage Class

    • Variables with automatic storage class are stored on the stack.
    • Automatic variables are those declared inside a block (e.g., function or loop) without any storage class specifier.

    Automatic Variables

    • Once the control goes out of the block, the value of automatic variables is lost.
    • Automatic variables are initialized every time the control enters the block.

    Default Storage Class

    • The default storage class for variables declared without a specific storage class is automatic.

    Global and Static Variables

    • Global and static variables are allocated memory in the data segment.

    Scope of Automatic Variables

    • The scope of automatic variables is limited to the block they are defined in.

    Data Type of a Variable

    • The data type of a variable indicates the type of value it can hold and the operations that can be performed on it.

    Scope of a Variable

    • The scope of a variable refers to the region of the program where the variable can be accessed.

    Linkage of a Variable

    • A variable has linkage if it can be accessed from multiple source files.
    • The presence of a variable with the same name in multiple files determines whether a variable has linkage.

    External Linkage

    • A variable with external linkage means it can be accessed from multiple source files.

    Storage Duration of a Variable

    • The storage duration or lifetime of a variable is determined by its storage class.

    Storage Classes

    • Different storage classes (automatic, static, external, and register) differ in terms of storage duration, scope, and linkage.

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    Description

    Test your knowledge on C programming variables, storage classes, scope, linkage, and lifetime. Understand how variables are defined, their visibility within a program, and the memory allocation related to different storage classes.

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