Intro to C sharp Chapter 7-9 true or false
You cannot store a string in a variable of the char data type.
FALSE; Because char variables can hold only one character
Enumerators must be enclosed in quotation marks.
FALSE; Enumerators must be legal C# identifiers
An enum declaration can only appear inside the application's namespace.
FALSE; Outside the application's namespace, Inside the application's namespace, and Inside a class
The fields contained in a structure must be of the same data type.
FALSE; The fields can be of different data types
Structure objects can be passed into a method only by reference.
FALSE; can be passed by value or by reference
You can store a mixture of data types in an array.
FALSE; cannot
You use the == operator to compare two array reference variables and determine whether the arrays are equal.
FALSE; cannot use the == operator
When you call a string object's Split method, the method divides the string into two substrings and returns them as an array of strings.
FALSE; he method extracts tokens from the string and returns them as an array of strings
Individual variables are well suited for storing and processing lists of data.
FALSE; not well suited
The objects of a class can be stored in an array, but not in a List.
False; can store in both
A class is an object.
False; describes the object
Class declarations must be written inside the project namespace.
False; not required
One way to find the classes needed for an object-oriented program is to identify all the verbs in a description of the problem domain.
False; nouns
Objects that are instances of a class are always passed by value.
False; passed by reference
Class fields are almost always declared public in order to make their values easily accessible to code outside of the class.
False; private in order to protect them from accidental corruption
A jagged array is similar to a two-dimensional array, but the rows in a jagged array can have different numbers of columns.
TRUE
Before you can use the structure to store data, you must create an instance of the structure in memory.
TRUE
C# allows you to access the individual characters in a string using subscript notation.
TRUE
ImageList controls are designed to store small images such as icons or thumbnails.
TRUE
It is a common practice to make all a class's fields private and to provide access to those fields through methods.
TRUE
Reference variables can be used only to reference objects.
TRUE
The integer values that you assign to enumerators do not have to be unique.
TRUE
The subscript of the last element will always be one less than the array's Length property.
TRUE
When you are working with a value type, you are using a variable that holds a piece of data.
TRUE
When you create a List object, you do not have to know the number of items that you intend to store in it.
TRUE
When you create a numeric array in C#, its elements are set to the value 0 by default.
TRUE
You can compare enumerators and enum variables with relational operators.
TRUE
You cannot perform comparison operations directly on structure objects.
TRUE
Arrays are reference type objects.
True
Constructors can accept arguments in the same way as other methods.
True
Every form in a Visual C# project has a class.
True
If you need to make a property read only, you simply do not write a set accessor for the property.
True
If you try to pass a property to a ref or an out parameter, an error will occur.
True
It is legal to write a class without any constructors.
True
The get accessor can be thought of as a method that returns the class property's value.
True
The same rules for naming variables apply to naming classes.
True
