Problem Solving through Programming in C

Which of the following is a valid C variable name?

• var1

• 1var

• var-1

• var.1

What is the purpose of the #include directive in a C program?

• To include libraries

• To define variables

• To create functions

• To comment code

Which of the following correctly describes the purpose of a compiler in C?

• Converts source code to machine code

• Executes the program

• Debugs the code

• Formats the output

Which of the following is true about the execution nature of C programs?

• They are interpreted

• They are compiled

• They are both interpreted and compiled

• None of the above

In C programming, what is the best way to comment multiple lines?

• // comment

• /* comment */

• # comment

Which of the following statements is true regarding variable declaration in C?

• Variables must be declared before use

• Variables can be declared anywhere

• Variable names can start with a number

• None of the above

What will be the output of the flowchart given below?

• 4

• 8

• 16

• 20

The output of the following algorithm is

• 21

• 28

• 30

• 40

Which of the following statements is correct?

• C is a high-level language

• C is a low-level language

• C is both high and low-level

• C is not a programming language

What is typecasting in C?

• Assigning a value to a variable

• Converting a variable from one data type to another

• Defining a new data type

• Initializing a variable with a constant value