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In this question, the options are missing. Here is the complete question:
Thomas would like to know when is the best time of the season to plant his tomato seeds. Which type of informational reference should he use?
A. Encyclopedia
B. Atlas
C. Almanac
D. Any of these
The correct answer is Almanac
Explanation:
Knowing the season or month to plant specific seeds is a relevant factor that can determine whether a plant grows and thrives. Because of this Thomas needs accurate and complete information about the best time of the year to plant tomatoes. This information can be found in an almanac because almanacs include planting dates for different plants as well as weather forecasts and other important events that can affect agriculture. Moreover, this informational reference provides information about the current year, which makes it to be updated in the topics it covers.
Your answer would be: a hand pointer.
Stack is LIFO data structure (Last In First Out) where the last element entered in stack will be the last one to be out of stack. It has three operations: push() : used to insert an element in stack, pop() : used to delete an element from the stack, top() : used to return the top of the stack i.e. the newest member of the stack. All these operations will take place at the top.
<u>Explanation:</u>
Now, looking at the program, x and y are initialized the values of 2 and 3 respectively. The stack pushes 8 onto the stack making it the first member of the stack. Then the value of x which is 2 is pushed onto the stack. Next, (x+5) = (2+5) = 7 is pushed onto the stack.
Pop() is used to delete hence 7 is popped out from the stack. top() is assigned to y which is 2 in this case and again 2 is popped out from the stack. Now, (x+y) = (2+2) = 4 is pushed onto the stack. And the top() is assigned to x which is 4. 4 is again popped out from the stack. Hence the value of x is 4.
