Answer is A, Action query
Answer:
Program for the above question in python:
mass = float(input("Enter the mass in grams")) # It is used to take the mass as input.
density = float(input("Enter the density grams per cm cube")) # It is used to take the input for the grams.
print("Volume ={:.2f}".format(mass/density)) #It is used to print the Volume.
Output:
- If the user inputs as 2.98 and 3.2, then it will results as 0.92.
Explanation:
- The above code is in python language, in which the first statement is used to take the inputs from the user for the mass and sore it into a mass variable.
- Then the second statement also takes the input from the user and store it into a density variable.
- Then the third statement of the code is used to print the volume up to two places using the above-defined formula.
Editing, saving, printing, copying and pasting
Answer:
dataFile << salary;
Explanation:
To write salary to a file (payroll.dat) using ofstream, you make use of the following instruction:
<em>ofstream dataFile;
</em>
<em>myfile.open ("payroll.dat");
</em>
<em>myfile <<salary;
</em>
<em>myfile.close();</em>
<em />
This line creates an instance of ofstream
<em>ofstream dataFile;
</em>
This line opens the file payroll.dat
<em>myfile.open ("payroll.dat");
</em>
This is where the exact instruction in the question is done. This writes the value of salary to payroll.dat
<em>myfile <<salary;
</em>
This closes the opened file
<em>myfile.close();</em>
<em />
<em />
Answer:
B
Explanation:
POP3 protocol is an email protocol that works by downloading and storing emails onto a user's device or tablet.
