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Questions and Answers
What must be considered in the naming of identifiers in C?
What must be considered in the naming of identifiers in C?
- Identifiers are case-sensitive. (correct)
- Identifiers can begin with any numeric digit.
- Identifiers must include at least one numeric digit.
- Identifiers can have unlimited length.
What is the maximum number of significant characters allowed in C identifiers?
What is the maximum number of significant characters allowed in C identifiers?
- 64
- 128
- 16
- 32 (correct)
Which of the following is NOT a fundamental data type in C?
Which of the following is NOT a fundamental data type in C?
- string (correct)
- double
- int
- char
Which data type is optimized for storing single precision floating point numbers in C?
Which data type is optimized for storing single precision floating point numbers in C?
How are the storage and interpretation of variables determined in C?
How are the storage and interpretation of variables determined in C?
What is the main purpose of the I/O controller?
What is the main purpose of the I/O controller?
Which function is NOT typically associated with file management in an operating system?
Which function is NOT typically associated with file management in an operating system?
What does the operating system use to prevent unauthorized access?
What does the operating system use to prevent unauthorized access?
What aspect of resource management does an operating system handle?
What aspect of resource management does an operating system handle?
Job accounting by an operating system is primarily concerned with what?
Job accounting by an operating system is primarily concerned with what?
Which of the following is an example of a common service provided by an operating system?
Which of the following is an example of a common service provided by an operating system?
Which task is NOT performed by an operating system in relation to I/O operations?
Which task is NOT performed by an operating system in relation to I/O operations?
How does an operating system manage error detection?
How does an operating system manage error detection?
What is the output of the program that performs an implicit conversion of an integer to a double?
What is the output of the program that performs an implicit conversion of an integer to a double?
What does explicit conversion in C require?
What does explicit conversion in C require?
In the expression 'x = (float) 7 / 5', what is the purpose of the type casting?
In the expression 'x = (float) 7 / 5', what is the purpose of the type casting?
What defines implicit conversions in C language?
What defines implicit conversions in C language?
What is a characteristic of usual arithmetic conversions in C?
What is a characteristic of usual arithmetic conversions in C?
What happens when an integer is assigned to a double variable in C?
What happens when an integer is assigned to a double variable in C?
What is the result of the expression 'p = (short) i' when i is 20?
What is the result of the expression 'p = (short) i' when i is 20?
Which statement correctly describes inbuilt typecast functions?
Which statement correctly describes inbuilt typecast functions?
What does 'call by value' mean in C programming?
What does 'call by value' mean in C programming?
Which of the following is NOT a fundamental data type in C?
Which of the following is NOT a fundamental data type in C?
Which of the following correctly describes a 'switch' statement in C?
Which of the following correctly describes a 'switch' statement in C?
In C, what is the main difference between a structure and a union?
In C, what is the main difference between a structure and a union?
What does operator precedence determine in the context of C programming?
What does operator precedence determine in the context of C programming?
Which loop structure is guaranteed to execute at least once?
Which loop structure is guaranteed to execute at least once?
When passed to functions, what advantage do pointers provide in C?
When passed to functions, what advantage do pointers provide in C?
How can multi-dimensional arrays be accessed in C?
How can multi-dimensional arrays be accessed in C?
What type of error occurs when a program abnormally terminates due to incorrect logic, such as division by zero?
What type of error occurs when a program abnormally terminates due to incorrect logic, such as division by zero?
Which line is most likely to cause a syntax error in the while loop example provided?
Which line is most likely to cause a syntax error in the while loop example provided?
What will the compiler output when a semicolon is missing in the example provided?
What will the compiler output when a semicolon is missing in the example provided?
What is an example of a run-time error mentioned in the content?
What is an example of a run-time error mentioned in the content?
What error type is primarily associated with linking different object files?
What error type is primarily associated with linking different object files?
In the absence of a formatted output but proper logic, what type of error might the compiler flag?
In the absence of a formatted output but proper logic, what type of error might the compiler flag?
What can be inferred about errors that the compiler can catch versus those that arise during execution?
What can be inferred about errors that the compiler can catch versus those that arise during execution?
Which of the following best describes a syntax error?
Which of the following best describes a syntax error?
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Study Notes
Components of C Language
- C language features fundamental data types including char, int, float, and double.
- Variables in C correspond to memory locations where data is stored.
- Understanding type conversion is essential for correct data manipulation.
Standard I/O in C
- Standard input/output allows user interaction through functions like
printf()andscanf(). - Control structures such as
if,switch, and loops (while,do while,for) facilitate conditional branching and iteration.
Storage Classes
- Storage classes in C define variable scope (local or global) and lifetime (automatic, static, external).
- Knowledge of storage classes is crucial for effective memory management.
Types of Operators
- Operators in C include arithmetic, relational, logical, and bitwise operators.
- Familiarity with operator precedence and associativity is necessary for evaluating complex expressions.
Functions and Recursion
- Functions allow modular programming; types include user-defined and library functions.
- Parameters can be passed by value (creating a copy) or by reference (passing the address).
- Recursive functions call themselves to solve problems iteratively.
Arrays and Pointers
- Arrays (single and multi-dimensional) provide a way to store multiple values in contiguous memory locations.
- Pointers hold memory addresses, enabling dynamic memory management and efficient array manipulation.
- Structures and unions are used to group related data, enhancing data organization.
File Management
- File systems organize data in directories for easy navigation; an OS manages file data through allocation and deallocation.
- File management includes tracking file status, resource allocation, and access permissions.
Error Types in C Programming
- Syntax Errors: Mistakes in code structure, such as missing semicolons or incorrect syntax.
- Run-Time Errors: Errors occurring during program execution (e.g., division by zero).
- Linker Errors: Errors that arise when linking object files post-compilation.
Identifier Naming Rules
- C identifiers can include letters, digits, and underscores, with case sensitivity.
- Up to 32 significant characters are considered in identifiers, with subsequent characters ignored.
Data Types and Typecasting
- Fundamental data types in C include char, int, float, and double.
- Implicit conversion automatically adjusts data types, while explicit conversion requires a cast operator.
- Common arithmetic conversions promote integer to float conversions when performing calculations.
Common Services of Operating System
- Operating systems provide essential services like program execution, file system manipulation, communication, and error detection.
- Security measures protect against unauthorized access, and job accounting monitors resource usage.
Algorithm Representation
- Algorithms can be represented using pseudocode and flowcharts to outline problem-solving steps.
- Clear algorithm representation aids in translating logical steps into executable code.
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