18 Questions
What is the purpose of operators in the C programming language?
To perform specific mathematical or logical manipulations
What is the primary advantage of using derived data types in C?
They allow for the handling of heterogeneous data
What type of operator is used to perform operations such as addition and subtraction?
Arithmetic Operators
What is the primary purpose of pointers in C?
To directly modify memory
What is the term for the ability of programmers to handle heterogeneous data?
Handling heterogeneous data
What is the name of the tutorial that provides information on C operators?
C - OPERATORS
What is the result of the expression A + B?
30
What is the result of the expression A - B?
-10
What is the result of the expression A * B?
200
What is the result of the expression A == B?
False
What is the result of the expression A > B?
False
What is the result of the expression A < B?
True
What is the symbol used to represent pointers in C?
Asterisk (*)
What is the purpose of the tilde (~) symbol in C?
To free memory
What is the operator used for multiplication in C?
Asterisk (*)
Which of the following is not a type of constant in C?
Pointer constant
What is the purpose of the hash symbol (#) in C?
To denote a pre-processor directive
What is the symbol used to access a member of a structure or a union in C?
Period (.)
Study Notes
Variables
- In C, variables can be declared for different data types, such as
int,char,float, anddouble. - Example:
double pi = 3.14159265359;
Derived Data Types
- C supports derived data types, including:
- Arrays
- Pointers
- Structures
- Unions
- These data types allow programmers to handle heterogeneous data, directly modify memory, and build complicated data structures.
Operators
- C language has a rich set of built-in operators, including:
- Arithmetic Operators
- Relational Operators
- Logical Operators
- Bitwise Operators
- Assignment Operators
- Misc Operators
- Each operator has a specific function, such as arithmetic, comparison, logical operations, etc.
Arithmetic Operators
- C supports the following arithmetic operators:
-
+(Addition) -
-(Subtraction) -
*(Multiplication) -
/(Division) -
%(Modulus Operator) -
++(Increment) -
--(Decrement)
-
Relational Operators
- C supports the following relational operators:
-
==(Equality) -
!=(Inequality) -
>(Greater Than) -
<(Less Than) -
>=(Greater Than or Equal To) -
<=(Less Than or Equal To)
-
Constants
- In C, constants can be declared using:
-
constkeyword -
#definepre-processor
-
- Types of constants in C include:
- Integer constants (e.g. 10, 11, 34)
- Floating-point constants (e.g. 45.6, 67.8, 11.2)
- Octal constants (e.g. 011, 088, 022)
- Hexadecimal constants (e.g. 0x1a, 0x4b, 0x6b)
- Character constants (e.g. 'a', 'b', 'c')
- String constants (e.g. "java", "c++", ".net")
Special Characters in C
- Special characters in C have special meanings and cannot be used for other purposes:
- Square brackets
[](used for subscripts) - Simple brackets
()(used for function declaration and function calling) - Curly braces
{ }(used for opening and closing code blocks and loops) - Comma
,(used for separating statements and function parameters) - Hash/pre-processor
#(used for pre-processor directives) - Asterisk
*(used for pointers and multiplication) - Tilde
~(used as a destructor to free memory) - Period
.(used to access members of a structure or union)
- Square brackets
Learn about the basics of variables and data types in C programming, including fundamental data types and derived data types such as arrays, pointers, structures, and unions. Understand how to declare and use variables in your programs.
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