Basics of C Programming

What does C stand for in C programming?

• C#

• C Language

• C

• C++

What is the purpose of the main() function in a C program?

• The main() function is responsible for memory allocation.

• The main() function is used for defining global variables.

• The main() function is the entry point of a C program.

• The main() function is where all the functions are declared.

How do you declare a variable in C?

• declare int x;

• int x = new;

• var x int;

• To declare a variable in C, use the syntax: type variable_name; (e.g., int x;).

What is the difference between int and float in C?

• int is a type of float, representing larger numbers.

• float is used for character data, while int is for numeric data.

• int can store decimal values, while float cannot.

• int represents whole numbers, while float represents numbers with decimal points.

What is a pointer in C?

• A pointer is a type of function in C.

• A pointer is a variable that stores a string in C.

• A pointer is a variable that holds the address of another variable in C.

• A pointer is a special kind of loop in C.

How do you create a comment in C code?

• Use '//' for single-line comments and '/* ... */' for multi-line comments.

• Use '#' for comments

• Use '/*' for single-line comments

• Use '//' for multi-line comments

What is the use of the #include directive?

• To comment out sections of code.

• To execute a function from a library.

• To define a variable in the source code.

• To include the contents of a file or library in the source code.

Explain the concept of arrays in C.

• An array in C is a dynamic data structure that can change size during runtime.

• An array in C is a collection of elements that can only be accessed by their values.

• An array in C is a collection of elements of the same type, stored in contiguous memory locations, accessed via indices.

• An array in C is a single variable that can hold multiple data types.

What is a loop, and name the types of loops in C?

• foreach loop

• The types of loops in C are: 1. for loop 2. while loop 3. do-while loop

• repeat-until loop

• loop until condition

What is the significance of the return statement in a function?

• The return statement can only return strings, not other data types.

• The return statement is optional and has no effect on execution.

• The return statement is used to define a function's name.

• The return statement is significant because it allows a function to output a value and terminate its execution.