C Language Fundamentals Unit 1 Quiz

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Questions and Answers

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?

128

32 (correct)

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?

float Signup and view all the answers

How are the storage and interpretation of variables determined in C?

By the type of variable declared. Signup and view all the answers

What is the main purpose of the I/O controller?

To decide process allocation for devices. Signup and view all the answers

Which function is NOT typically associated with file management in an operating system?

Controlling system performance. Signup and view all the answers

What does the operating system use to prevent unauthorized access?

Security techniques like passwords. Signup and view all the answers

What aspect of resource management does an operating system handle?

Both allocation and de-allocation of resources. Signup and view all the answers

Job accounting by an operating system is primarily concerned with what?

Tracking time and resources used by jobs. Signup and view all the answers

Which of the following is an example of a common service provided by an operating system?

Program execution. Signup and view all the answers

Which task is NOT performed by an operating system in relation to I/O operations?

Executing hardware diagnostics. Signup and view all the answers

How does an operating system manage error detection?

By producing error messages and debugging aids. Signup and view all the answers

What is the output of the program that performs an implicit conversion of an integer to a double?

Implicit value is 20 Signup and view all the answers

What does explicit conversion in C require?

Use of type casting operator Signup and view all the answers

In the expression 'x = (float) 7 / 5', what is the purpose of the type casting?

To produce a float result from an integer operation Signup and view all the answers

What defines implicit conversions in C language?

Automatically performed without an operator Signup and view all the answers

What is a characteristic of usual arithmetic conversions in C?

Converts lower size type to higher size type Signup and view all the answers

What happens when an integer is assigned to a double variable in C?

An implicit conversion takes place Signup and view all the answers

What is the result of the expression 'p = (short) i' when i is 20?

Short value is set to 20 Signup and view all the answers

Which statement correctly describes inbuilt typecast functions?

They facilitate data type conversion Signup and view all the answers

What does 'call by value' mean in C programming?

A copy of the argument is passed to the function. Signup and view all the answers

Which of the following is NOT a fundamental data type in C?

string Signup and view all the answers

Which of the following correctly describes a 'switch' statement in C?

It executes code based on the value of a single variable or expression. Signup and view all the answers

In C, what is the main difference between a structure and a union?

A structure can hold multiple data types simultaneously, while a union can only hold one at a time. Signup and view all the answers

What does operator precedence determine in the context of C programming?

The order in which operators are evaluated in an expression. Signup and view all the answers

Which loop structure is guaranteed to execute at least once?

do while loop Signup and view all the answers

When passed to functions, what advantage do pointers provide in C?

They allow for the modification of the original variable's value. Signup and view all the answers

How can multi-dimensional arrays be accessed in C?

By using multiple nested for loops. Signup and view all the answers

What type of error occurs when a program abnormally terminates due to incorrect logic, such as division by zero?

Run-time Error Signup and view all the answers

Which line is most likely to cause a syntax error in the while loop example provided?

while(.); Signup and view all the answers

What will the compiler output when a semicolon is missing in the example provided?

error: expected ';' before '}' Signup and view all the answers

What is an example of a run-time error mentioned in the content?

Division by zero Signup and view all the answers

What error type is primarily associated with linking different object files?

Linker Error Signup and view all the answers

In the absence of a formatted output but proper logic, what type of error might the compiler flag?

Syntax Error Signup and view all the answers

What can be inferred about errors that the compiler can catch versus those that arise during execution?

Run-time errors are typically uncatchable by the compiler. Signup and view all the answers

Which of the following best describes a syntax error?

An incorrectly formatted piece of code that cannot compile. Signup and view all the answers

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() and scanf().
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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Description

Test your knowledge on the fundamental components of the C language in this Unit 1 quiz. Explore topics like data types, variables, memory locations, type conversion, standard I/O, storage classes, and operators. Perfect for students looking to solidify their understanding of C programming basics.

C Language Fundamentals Unit 1 Quiz

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Questions and Answers

What must be considered in the naming of identifiers in C?

What is the maximum number of significant characters allowed in C identifiers?

Which of the following is NOT a fundamental data type 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?

What is the main purpose of the I/O controller?

Which function is NOT typically associated with file management in an operating system?

What does the operating system use to prevent unauthorized access?

What aspect of resource management does an operating system handle?

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 task is NOT performed by an operating system in relation to I/O operations?

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 does explicit conversion in C require?

In the expression 'x = (float) 7 / 5', what is the purpose of the type casting?

What defines implicit conversions in C language?

What is a characteristic of usual arithmetic conversions 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?

Which statement correctly describes inbuilt typecast functions?

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 correctly describes a 'switch' statement in C?

In C, what is the main difference between a structure and a union?

What does operator precedence determine in the context of C programming?

Which loop structure is guaranteed to execute at least once?

When passed to functions, what advantage do pointers provide 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?

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 is an example of a run-time error mentioned in the content?

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?

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?

Study Notes

Components of C Language

Standard I/O in C

Storage Classes

Types of Operators

Functions and Recursion

Arrays and Pointers

File Management

Error Types in C Programming

Identifier Naming Rules

Data Types and Typecasting

Common Services of Operating System

Algorithm Representation

Studying That Suits You

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