Podcast
Questions and Answers
Which of the following is NOT a type of token in C?
Which of the following is NOT a type of token in C?
- Keywords
- Operators
- Identifiers
- Functions (correct)
The conditional operator provides a shorter way to express an if-else statement.
The conditional operator provides a shorter way to express an if-else statement.
True (A)
What is the purpose of data types in C?
What is the purpose of data types in C?
Data types in C specify the type of data a variable can store, influencing how the data is represented in memory and the operations that can be performed on it.
The ______ operator in C is used to perform modulo operation, which returns the remainder of an integer division.
The ______ operator in C is used to perform modulo operation, which returns the remainder of an integer division.
Match the operator categories with their respective operators:
Match the operator categories with their respective operators:
Which of the following keywords is NOT reserved in the C programming language?
Which of the following keywords is NOT reserved in the C programming language?
The increment and decrement operators can only be used as prefixes.
The increment and decrement operators can only be used as prefixes.
What is the role of header files in a C program?
What is the role of header files in a C program?
Which of the following is NOT considered a fundamental building block of a C program?
Which of the following is NOT considered a fundamental building block of a C program?
C programs can be compiled and executed on any hardware and software platform without modification.
C programs can be compiled and executed on any hardware and software platform without modification.
What is the primary purpose of variables in a C program?
What is the primary purpose of variables in a C program?
C is a ______ language, meaning it follows a top-down, step-by-step approach to problem-solving.
C is a ______ language, meaning it follows a top-down, step-by-step approach to problem-solving.
Match the following features of C with their descriptions:
Match the following features of C with their descriptions:
Which of the following statements accurately describes the 'temp' variable used in the 'Swap two numbers' program?
Which of the following statements accurately describes the 'temp' variable used in the 'Swap two numbers' program?
In the program to calculate the area of a circle, the value of '3.14159' represents the radius of the circle.
In the program to calculate the area of a circle, the value of '3.14159' represents the radius of the circle.
What is the purpose of the 'getch()' function used in the provided C programs?
What is the purpose of the 'getch()' function used in the provided C programs?
Flashcards
Variables
Variables
Named storage locations in memory that hold different values.
Tokens
Tokens
Basic building blocks of a C program that are meaningful to the compiler.
Operators
Operators
Special symbols in C that perform operations on one or more operands.
Keywords
Keywords
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Data Types
Data Types
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Increment Operator
Increment Operator
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Conditional Operator
Conditional Operator
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Structure of C
Structure of C
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Function in C
Function in C
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Variable in C
Variable in C
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Statement in C
Statement in C
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C as a procedural language
C as a procedural language
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Portability of C programs
Portability of C programs
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Efficiency of C
Efficiency of C
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Swap Numbers Program
Swap Numbers Program
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Area of Circle Calculation
Area of Circle Calculation
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Study Notes
Variables
- Variables are named storage locations in a computer's memory that hold data during program execution.
- Data can be manipulated and accessed throughout the program.
Tokens
- Tokens are the basic building blocks of a C program.
- Tokens are the smallest meaningful units for the C compiler.
- Token types include keywords, identifiers, constants, strings, and operators.
Operators
- Operators are special symbols in C that perform operations on one or more operands.
- They handle arithmetic, logical, relational, and other operations on data.
- Keywords are reserved words in C with predefined meanings.
- They are used for specific purposes in a C program and cannot be used as variable names.
Data Types
- Data types in C specify the type of data a variable can hold.
- Common data types in C with storage sizes are:
char: 1 byteshort int: 2 bytesint: 4 byteslong int: 4 bytesfloat: 4 bytesdouble: 8 byteslong double: 8 bytes
Types of Operators
- Common operator types in C include:
- Arithmetic Operators: +, -, *, /, %
- Relational Operators: <, >, <=, >=, ==, !=
- Logical Operators: &&, ||, !
- Bitwise Operators: &, |, ^, ~, <<, >>
- Assignment Operators: =, +=, -=, *=, /=, %=
- Increment/Decrement Operators: ++, --
Increment/Decrement Operators
- Increment Operator (++): Increases a variable's value by 1.
- Decrement Operator (--): Decreases a variable's value by 1.
- Prefix (++x or --x) or postfix (x++ or x--) affects evaluation order.
Conditional Operator
- Also called the ternary operator, it provides a shorthand way to write if-else statements.
- Syntax:
condition ? expression1 : expression2;
Structure of C Programs
- C programs consist of header files, functions, variables, and statements.
- Header files (using #include) provide access to functions/definitions.
- Functions are the fundamental building blocks of a C program.
- Variables store data manipulated during program execution.
- Statements (assignments, loops, conditional statements) are instructions for program execution.
Features of C
- Procedural Language: Top-down, step-by-step approach to problem-solving.
- Portable: Compiles and runs on various hardware and software platforms.
- Efficient: Provides low-level access to memory and hardware, beneficial for system programming.
- Flexible: Allows direct memory/hardware manipulation for diverse applications.
Example C Programs (Provided)
- Swap two numbers
- Calculate total and percentage of 3 subjects
- Calculate area of a circle
- Arithmetic operations on two numbers (addition, subtraction, multiplication, modulo)
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