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Questions and Answers
What is the purpose of the code segment in an .exe file?
What is the purpose of the code segment in an .exe file?
Where are variables with automatic storage class stored?
Where are variables with automatic storage class stored?
What happens to the value of automatic variables once the control goes out of the block they're defined in?
What happens to the value of automatic variables once the control goes out of the block they're defined in?
Which storage class is the default for variables declared without a specific storage class?
Which storage class is the default for variables declared without a specific storage class?
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Where do global and static variables get allocated memory?
Where do global and static variables get allocated memory?
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What is the scope of automatic variables in C programming?
What is the scope of automatic variables in C programming?
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What does the data type of a variable indicate?
What does the data type of a variable indicate?
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What best describes the scope of a variable?
What best describes the scope of a variable?
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What determines if a variable has linkage?
What determines if a variable has linkage?
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What does a variable with external linkage mean?
What does a variable with external linkage mean?
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Which factor determines the storage duration or lifetime of a variable?
Which factor determines the storage duration or lifetime of a variable?
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What is different for variables declared with each storage class?
What is different for variables declared with each storage class?
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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.
