Practice Quizz

What is a computer program?

• A set of instructions for a computer to follow.

• A type of hardware component.

• A programming language.

• A software application.

Which of the following is a valid C statement?

• print "Hello, world!";

• printf("Hello, world!\n");

• echo "Hello, world!";

• display "Hello, world!";

What is the purpose of a semicolon (;) in C?

• To start a new line.

• To end a statement.

• To separate variables.

• To comment out code.

What does the `%d` format specifier do in `printf()`?

• Prints a floating-point number.

• Prints a character.

• Prints an integer.

• Prints a string.

What does the `scanf()` function do?

• Prints data to the console.

• Reads data from the console.

• Declares a variable.

• Ends the program.

What does the `if` statement do in C?

• Repeats a block of code.

• Executes a block of code conditionally.

• Declares a variable.

• Defines a function.

What does the `for` loop do in C?

• Executes a block of code repeatedly.

• Executes a block of code conditionally.

• Reads data from a file.

• Writes data to a file.

What is a comment in C code?

• A line of code that is executed.

• A line of code that is ignored by the compiler.

• A variable declaration.

• A function definition.

How do you declare an integer variable named `count` in C?

• int count;

• integer count;

• var count : int;

• count = int;

Which of the following is a valid C identifier?

• rollNumber 11

• roll Number 3

• rollNumber_9

• 65rollNumber