What is the file extension for C source code files?

• .cpp
• .java
• .c
• .py

Answer explanation

C source code files typically end with the `.c` extension.

Which function is the entry point of every C program?

• start()
• begin()
• main()
• run()

Answer explanation

The `main()` function is where the execution of a C program begins.

Which symbol is used to mark the end of a statement in C?

• :
• ;
• ,
• .

Answer explanation

A semicolon (`;`) is used to terminate most statements in C.

How do you write a single-line comment in C?

• `/* comment */`
• `// comment`
• ``
• `# comment`

Answer explanation

`//` is used for single-line comments in C (and C++).

How do you write a multi-line comment in C?

• `/* comment */`
• `// comment`
• `# comment #`
• `-- comment --`

Answer explanation

`/*` starts a multi-line comment and `*/` ends it.

Which data type is used to store whole numbers (integers)?

• float
• char
• int
• double

Answer explanation

The `int` data type is used to store integer values.

Which data type is used to store single characters?

• int
• char
• float
• bool

Answer explanation

The `char` data type is used to store a single character.

Which data type is used to store numbers with decimal points?

• int
• char
• float
• long

Answer explanation

The `float` and `double` data types are used for floating-point numbers. `float` typically uses less memory than `double`.

How do you declare an integer variable named `age`?

• `int age;`
• `age int;`
• `variable age int;`
• `declare age as int;`

Answer explanation

Variables are declared by specifying their type followed by their name.

What is the process of giving a variable an initial value called?

• Declaration
• Definition
• Initialization
• Assignment

Answer explanation

Initialization is the process of assigning an initial value to a variable during its declaration.