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C++ Beginner Skill Assessment Practice Test
Question 1
What is the file extension for a C++ source file?
- A
.c
- B
.cpp
- C
.h
- D
.exe
Question 2
Which among the following symbol is used to comment a single line in C++?
- A
#
- B
/*
- C
//
- D
\\
Question 3
What is the output of the following C++ code?
#include <iostream>
using namespace std;
int main()
{
cout << "Hello, World!" << endl;
return 0;
}
- A
Hello, World
- B
Hello, World!
- C
Hello World!
- D
Hello World
Question 4
Which among the following data types is used to store a single character in C++?
- A
int
- B
char
- C
float
- D
double
Question 5
What is the size of an int data type in C++ (on most systems)?
- A
2 bytes
- B
1 byte
- C
8 bytes
- D
4 bytes
Question 6
Which of the following declares a single-precision floating-point variable in C++?
- A
int x = 3.14;
- B
float x = 3.14;
- C
char x = 3.14;
- D
double x = 3.14;
Question 7
What is the default value of a global variable in C++?
- A
0
- B
undefined
- C
garbage value
- D
null
Question 8
Which of the following is true about static variables?
- A
They are reinitialized every time the function is called.
- B
They retain their value between function calls.
- C
They can only be declared within a function.
- D
They cannot be initialized.
Question 9
Where can a local variable be accessed in C++?
- A
Only within the block it is declared
- B
Throughout the entire program
- C
Within the file it is declared
- D
Within the function it is declared
Question 10
How do you access a global variable named x when there is a local variable with the same name?
- A
global::x
- B
::x
- C
x
- D
global_x
There are 50 questions to complete.
