C++ Honor's Project

Test Your Knowledge

Variables

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1. What is the difference between a variable's name and its identifier?

A variable's name is the same as its identifier.
A variable's name is the name given to the variable by the programmer, while the identifier is the name used by the compiler to refer to the variable.
A variable's identifier is the name given to the variable by the programmer, while the name is the name used by the compiler to refer to the variable.
There is no difference between a variable's name and its identifier.

2. What is the scope of a local variable?

The scope of a local variable is the block in which the variable is declared.
The scope of a local variable is the function in which the variable is declared.

3. What is the value of the variable x after the following code is executed?

int x = 5;

										x = x + 2;

12
5
7
10

4. What is the correct way to initialize a C++ variable?

By assigning it a value
By declaring it
By defining it
All of the above

5. Create a variable named myNum and assign the value 50 to it.

= ;

6. Display the sum of 5 + 10, using two variables: x and y.

= ;


									int y = 10;

									cout << x + y;

7. Create a variable called z, assign x + y to it, and display the result.


									int x = 5;

									int y = 10;


									= x + y;

									cout << ;

8. Fill in the missing parts to create three variables of the same type, using a comma-separated list:

x = 5 y = 6


									z = 50;

									cout << x + y + z;

main.cpp

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