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Questions and Answers
Which data type would you use to represent the value 3.14 in C?
Which data type would you use to represent the value 3.14 in C?
- char
- float (correct)
- double
- int
C is a dynamically typed language, allowing variable types to be changed at runtime.
C is a dynamically typed language, allowing variable types to be changed at runtime.
False (B)
What keyword is used to declare a constant in C?
What keyword is used to declare a constant in C?
const
In C, the __________ operator is used to check if two values are not equal.
In C, the __________ operator is used to check if two values are not equal.
Match the following C data types with their descriptions:
Match the following C data types with their descriptions:
Flashcards
What is C?
What is C?
C is a general-purpose programming language known for its efficiency and control over hardware. It's used for system programming, embedded systems, and high-performance applications.
Compiled Language
Compiled Language
A compiled language translates source code into machine code (binary instructions) before execution. This makes the program run faster but requires a separate compilation step.
Data Types
Data Types
Different types of data that C uses to store values: integers, floating-point numbers, characters, and more.
Variables in C
Variables in C
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Constants in C
Constants in C
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Study Notes
Introduction to C Programming
- C is a general-purpose, imperative programming language, developed by Dennis Ritchie at Bell Labs.
- Its efficiency and hardware control make it suitable for system programming, embedded systems, and high-performance applications.
- C is a compiled language, translated to machine code before execution.
- It's a procedural language, emphasizing functions as fundamental building blocks.
Data Types in C
- C uses various data types to represent values.
- Fundamental data types include:
int: Integer values (e.g., 10, -5).float: Floating-point numbers (e.g., 3.14, -2.5).double: Double-precision floating-point numbers (higher precision thanfloat).char: Single characters (e.g., 'A', 'z').void: Represents the absence of a type (often used with functions).
- Variables require a declared data type before use.
- C is statically typed, requiring data types at compile time.
Variables and Constants
- Variables are named storage locations for data.
- They must be declared with a type and name.
- Constants represent fixed values, unchanging during execution. They are often declared using
const. - Example:
const int MAX_VALUE = 100;
Operators in C
- C uses operators for data manipulation.
- Arithmetic operators:
+,-,*,/,%(modulo). - Relational operators:
==,!=,>,<,>=,<=. - Logical operators:
&&(AND),||(OR),!(NOT). - Assignment operator:
=. - Other operators:
++(increment),--(decrement),sizeof(size of data type or variable),&(address of). - Relational operator:
>=
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