Programming Output and Input Quiz
int y = 4 % 2; y++; Console.Write(y); 1 2 0 No Output Error None of the above
1, % operator returns the remainder of the division of 4 by 2, which is 0
string x = "1"; char y = '6'; Console.Write(x + y); 6 16 61 No output Error None of the above
16
string x = "1"; int y = 6; Console.Write(x + y); 6 16 61 No output Error None of the above
16, treats it as a string
int sum = (2 + 2 + 1); int average = sum / 2; Console.Write(average); 5 2 2.5 No Output Error None of the above
2, int cannot be a decimal
Console.WriteLine(3); 3 No output Error None of the above
3
string x = Console.ReadLine( ); x = "3"; Console.Write(x); 3 [anything user enters] b No Output Error None of the above
3
int x = 5; x--; Console.Write(x); 3 2 4 No Output Error None of the above
4
string x = Console.ReadLine(); Console.Write(5); b 5 [anything user enters] No Output Error None of the above
5
int x = 5; x = 6; x = 4 + 3; Console.Write(x); 6 5 7 No Output Error None of the above
7
int x = 5; x = x + 1; x++; Console.Write(x); 6 7 5 No Output Error None of the above
7
int x = 1; int y = 6; Console.Write((x + y)); 6 7 No output Error None of the above
7, order of operations
Which operator can be used to compare two values? >< == = <> None of the above
==
Which operator is used to multiply numbers? x # * % None of the above
*
How do you insert COMMENTS in C# code? // This is a comment # This is a comment /* This is a comment All of the above None of the above
// This is a comment
Console.Write(1); 1 No output Error None of the above
1
Console.WriteLine(23.5); 24 23 No output Error None of the above
None of the above, answer is 23.5
Which operator is used to add together two values? The + sign The * sign The & sign All of the above None of the above
The + sign
The Console.WriteLine() method can be used to display multiple values on the console using string concatenation True False
True
Variables need to be initialized. The computer will not assume a value for your variable and will complain if you use a variable that has no value. True False
True
Variables represent a place to store information so the computer can work with it True False
True
string x = Console.ReadLine(); x = "3"; Console.Write(x); string x = Console.ReadLine(); 3 [anything user enters] No Output Error None of the above
Error, x was already declared
How do you create a variable with the decimal number 2.8? float x = 2.8f; decimal x = 2.8m; double x = 2.8; All of the above None of the above
All of the above
Programming languages have a basic set of supported data types that hold values, this basic set of data types is referred to Simple types Pre-defined types Primitive types All of the above None of the above
All of the above
char z = 'Z'; string x = "BM" + z; Console.Write(x); Z BMZ BM No Output Error None of the above
BMZ
What is a correct syntax to output "Hello World" in C#? print("Hello World"); Console.WriteLine("Hello World"); System.out.println("Hello World"); echo("Hello World"); console.Write("Hello World"); All of the above None of the above
Console.WriteLine("Hello World");
char x = 0; 0 x No Output Error None of the above
Error
string x = "4"; Console.Write(x++); 4 5 No output Error None of the above
Error, ++ cannot be applied to a string
int x = 23.5; Console.WriteLine(x); 24 23 No output Error None of the above
Error, 23.5 isn't an integer
string x = "1"; char y = 6; Console.Write(x + y); 6 16 61 No output Error None of the above
Error, 6 needs to be in single quotes
decimal y = 3.5 m; int x = y + 2; Console.Write(x); 5.5 5 No Output Error None of the above
Error, can't add decimal to int
int x = true; int y = 6; Console.Write(x + y); 6 7 False True No output Error None of the above
Error, can't apply true to an integer type
string data = "4"; int x = data * 3; Console.WriteLine(x); 3 12 No Output Error None of the above
Error, can't do * between string and int
string = "4"; Console.Write(string); 4 No output Error None of the above
Error, cannot use string as a variable name
message = "hello world"; Console.WriteLine(message); message hello world No Output Error None of the above
Error, could be fixed by putting string before message
Double x = 23.5; Console.WriteLine(x); 24 23 No output Error None of the above
Error, data types need to be lower case
int x = 0; int x = 1; 0 1 No Output Error None of the above
Error, declaring x twice
string y = '4'; Console.Write(y); 4 No output Error None of the above
Error, needs double quotes
int x; Console.WriteLine(x); 0 x No Output Error None of the above
Error, never assigned a value to x
Console.Write(x); x No output Error None of the above
Error, never defined x
Console.WriteLine("hello"); hello! Hello No Output Error None of the above
Error, no ;
int x = Console.ReadLine(); Console.WriteLine(x); [anything user enters] b No Output Error None of the above
Error, readline results in a string not an int
bool x = true; Console.Write(bool); True False No output Error None of the above
Error, should be x in second line, bool is not the data type
int x = "10"; x 10 No Output Error None of the above
Error, shouldn't have ""
string x = 2; Console.WriteLine(x++); 3 No output Error None of the above
Error, string needs double quotes
Console.write("hello"); Console.write("world"); hello hello world No Output Error None of the above
Error, write is not capitalized
Console.write(4); Console.write(5); 4 5 45 No output Error None of the above
Error, write not capitalized
int x = 0; x = 3.4; 3.4 0 No Output Error None of the above
Error, x is an int and 3.4 is not
Console.WriteLine(3); Console.WriteLine(x); 0 3 No output Error None of the above
Error, x is undefined
A variable of type bool can be used to store numerical values. True False
False
A variable of type char can store multiple characters True False
False
A variable of type string can store any type of data, including numbers and booleans True False
False
The Console.ReadLine method can only be used to read a single character input from the user True False
False
The Console.ReadLine() method automatically converts user input to the appropriate data type True False
False
The Console.Write() method automatically adds a new line at the end of the output True False
False
The Console.WriteLine() method can only be used to display strings True False
False
The ability to read between the lines and determine what was meant rather than what was said is a skill computers are best suited for. True False
False
To initialize a variable means to assign it an initial type only. True False
False
bool x = false; Console.Write(x); 0 1 True False No output Error None of the above
False or false
Every variable must only have two things: a value and a name. True False
False, also has a type
The value of a string variable can be surrounded by single quotes. True False
False, double quotes
Declaring a variable means to introduce a new variable to the program. You define its value and its name only. True False
False, you assign its TYPE and name
A variable data-type defines the value of data the variable will hold. True False
Fasle
Console.ReadLine(); [anything user enters] b No Output Error None of the above
No Output
int x = 0; int X = 4; 4 0 No Output Error None of the above
No Output
int x = 1; 1 No output Error None of the above
No output
double x = 23.5; Console.WriteLine(x); 24 23 No output Error None of the above
None of the above, 23.5
A programming language is set of rules that provides a way of telling a computer what operations to perform, communicate an algorithm, or receive an input from the user and generates an output. True False
True
Assigning to a variable means to provide the variable with a value. True False
True
How do you create a variable with the numeric value 5? int x = 5; num x = 5 Integer x = 5; x = 5; All of the above None of the above
int x = 5
Which data type is used to create a variable that should store text? myString Txt string All of the above None of the above
string
