Answer:
This is using c++ syntax, you might need to make slight adjustment for other languages.
First activity:
string firstSnack = "chips";
string secondSnack = "pizza";
string thirdSnack = "apples";
string bestSnack = firstSnack;
bestSnack = secondSnack;
Second activity:
double apple = 0.5;
double banana = 0.75;
double orange = 1.43;
double total = apple + banana + orange;
Explanation:
When first declaring a variable, you want to specify the type (such as int, double, string, bool, etc.) and then the name. You can set the variable value in the declaration, or you can set it to a value later in the program by not having the equals sign and whatever comes next.
Answer:
The advantage for the above condition is as follows:-
Explanation:
- If a user creates a defined constant variable and assigns a value on its and then uses that variable instead of the value, then it will a great advantage.
- It is because when there is a needs to change the value of that variable, then it can be done when the user changes the value in one place. There is no needs to change the vale in multiple places.
- But if there is a value in multiple places instead of a variable and there is no constant variable, then the user needs to change the value in multiple places.
Answer:
C. sqrt(Math)
Explanation:
All but one of options A to E are is not a static method.
Only option C is a static method. The sqrt() is a static method of Math, that can always be used as Math.sqrt() is used;
The Math class defines all of its methods to be static. Invoking Math methods is done by using Math as a method rather than a variable of type Math; this means that sqrt(Math) doesn't rely on instance variables and don't need to be overridden, unlike others.
Lastly, sqrt(Math) is a static method because unlike other options, it is an utility method, and it is relevant to computations on primitive data types.
The purpose of the static method is in large part to offer a standard library of functions, and it doesn't need to be applied directly to an object.
