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sashaice [31]
2 years ago
5

A have a string, called "joshs_diary", that is huge (there was a lot of drama in middle school). But I don't want every one to k

now that this string is my diary. However, I also don't want to make copies of it (because my computer doesn't have enough memory). Which of the following lines will let me access this string via a new name, but without making any copies?
a. std::string book = joshs_diary;
b. std::string & book = joshs_diary; const
c. std::string * book = &joshs_diary;
d. std::string book(joshs_diary);
e. const std::string & book = joshs_diary;
f. const std::string * const book = &joshs_diary;
g. std::string * book = &joshs_diary;
Computers and Technology
1 answer:
Norma-Jean [14]2 years ago
5 0

Answer:

C and G

Explanation:

In C language, the asterisks, ' * ', and the ampersand, ' & ', are used to create pointers and references to pointers respectively. The asterisks are used with unique identifiers to declare a pointer to a variable location in memory, while the ampersand is always placed before a variable name as an r_value to the pointer declared.

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Multiply each element in origList with the corresponding value in offsetAmount. Print each product followed by a semicolon (no s
Pavlova-9 [17]

Answer:

Replace /* Your code goes here */  with

for(i =0; i<NUM_VALS; i++) {

    printf("%d", origList[i]*offsetAmount[i]);

printf(";");

}

Explanation:

The first line is an iteration statement iterates from 0 till the last element in origList and offsetAmount

for(i =0; i<NUM_VALS; i++) {

This line calculates and print the product of element in origList and its corresponding element in offsetAmount

    printf("%d", origList[i]*offsetAmount[i]);

This line prints a semicolon after the product has been calculated and printed

printf(";");

Iteration ends here

}

5 0
2 years ago
The results of the spec cpu2006 bzip2 benchmark running on an amd barcelona has an instruction count of 2.389e12, an execution t
saw5 [17]

Answer:

CPI = 0.94

Explanation:

The formula for execution time is given below:

Execution time = clock cycles * cycle time

As Execution time = 750 s

clock cycle time = 0.333 ns = 0.333 * 10^-9

so putting these values in the above formula, we get

750 = clock cycles * ( 0.333 * 10^-9 )

clock cycles = 750 / ( 0.333 * 10^-9 )

clock cycles = 2.25 * 10^12

As the results of the spec cpu2006 bzip2 benchmark running on an amd barcelona has an instruction count = 2.389 * 10^12

and the formula for clock cycles is:

clock cycles = number of instructions * CPI

CPI = clock cycles / number of instructions

CPI = 2.25 * 10^12 / 2.389 * 10^12

CPI = 0.94

5 0
2 years ago
As an information user you should be skeptical of
Sati [7]
I should be skeptical of the credibility of sources that I have during the gathering. Be cautious and make sure that data comes of from trusted specialized sources. Trusted sources can be easily identified for their popularity on certain fields. Determine the purpose of the site and the data it contains.
5 0
2 years ago
The number of operations executed by algorithms A and B is 40n2 and 2n3, respectively. Determine n0 such that A is better than B
Tom [10]

Answer:

Given that:

A= 40n^2

B = 2n^3

By given scenario:

40n^2=2n^3

dividing both sides by 2

20n^2=n^3

dividing both sides by n^2 we get

20 = n

Now putting n=20 in algorithms A and B:

A=40n^2

= 40 (20)^2

= 40 * (400)

A= 16000

B= 2n^3

= 2 (20)^3

= 2(8000)

B= 16000

Now as A and B got same on n = 20, then as given:

n0 <20 for n =20

Let us take n0 = 19, it will prove A is better than B.

We can also match the respective graphs of algorithms of A and B to see which one leads and which one lags, before they cross at n= 20.

8 0
2 years ago
. Write a statement that throws an IllgalArgumentException with the error message Argument cannot be negative.
dybincka [34]

Answer:

public class PostAccount

{

  public void withdraw(float savings)

  {

     if (savings >=0 )

     {

        IllegalArgumentException exception

              = new IllegalArgumentException("Savings cannot be negative");

        throw exception;

     }

     balance = savings - withdraw;

  }

 }

Explanation:

IllgalArgumentException is a type of NumberFormatException  of runtime exception. Here in the program we have created an object of IllgalArgumentException class and after that we have thrown the error to show the condition if it does not satisfy the if condition.

8 0
2 years ago
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