Which of the following is a valid C++ identifier?

• 2value

• value_2

• int

• for

Which header file is required for cout and cin?

• A) stdio.h

• B) iostream

• C) conio.h

• D) stdlib.h

What is the default value of an uninitialized local variable in C++?

• 0

• Garbage value

• NULL

• -1

Which data type is best for storing a single character?

• string

• char

• char[]

• bool

What will sizeof(int) typically return?

• 1

• 2

• 4

• Depends on compiler

Which type conversion is done automatically?

• Explicit

• Implicit

• Manual

• Casting only

What is the result of 10 / 3 in integer division?

• A) 3.33

• B) 3

• C) 4

• D) Error

What is the value of x after int x = 5; x += 2 * 3;?

• A) 11

• B) 21

• C) 7

• D) 17

Which operator has highest precedence?

• +

• =

• *

• ++ (postfix)

What does == do?

• Assigns value

• Compares values

• Checks address

• None