Basic C language

What does the 'printf' function do in C?

• A) Reads input from the user.

• B) Performs mathematical calculations.

• C) Prints output to the console

• D) Declares a variable.

Answer explanation

Which keyword is used to define a constant in C?

• A) const

• B) Float

• C) int

• D) var

Which data type is used to store whole numbers in C?

• A) float

• B) char

• C) int

• D) double

What is the symbol used for a single-line comment in C?

• A)#

• B) ==

• C) &&

• D) //

What is the header file for input and output functions in C?

• A) stdio.h

• B) iostream.h

• C) inputoutput.h

• D) conio.h

What is the purpose of the 'if' statement in C?

• A) Loop through a set of values.

• B) Make decisions based on conditions

• C) Perform bitwise operations.

• D) Declare a new variable

Which symbol is used for the "not equal to" comparison operator in C?

• a) ==

• b ) <>

• c ) !=

• d ) /=

Which data type is used to store single characters in C?

• a) char

• b) character

• c) string

• d) chr

Which keyword is used to declare a function that doesn't return any value in C?

• a) void

• b) int

• c) return

• d) none

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

• a) To declare variables.

• b) To print messages.

• c) To define constants.

• d) To start program execution