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Daniel [21]
4 years ago
15

Write a function safeOpen() that takes one parameter, filename — a string giving the pathname of the file to be opened for readi

ng. When safeOpen() is used to open a file, a reference to the opened file object should be returned if no exception is raised, just like for the open() function. If an exception is raised while trying to open the file, safeOpen() should return the value None
Computers and Technology
1 answer:
timurjin [86]4 years ago
3 0
My bad my friend was like that I don’t got it to go home I don’t want him texting him or whatever I don’t gotta is like I gotta do it
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Account numbers sometimes contain a check digit that is the result of a mathematical calculation. The inclusion of the digit in
marishachu [46]

Answer:

using System;

class CheckDigit

{

public static void Main (string[] args)

{ //Accepting value from user

Console.WriteLine ("Enter a four-digit account number");

int acc = Convert.ToInt32(Console.ReadLine());

int d=acc%10; //extracting the last digit

acc=acc/10; //having the first three digit

if(acc % 7 == d) //checking and displaying

Console.WriteLine ("Valid Account Number");

else

Console.WriteLine ("Invalid Account Number");

}

}

Explanation:

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3 years ago
Zenmap's topology tab displays a __________ that shows the relative size and connection type of all discovered ip hosts.
VladimirAG [237]
<span>Zenmap's topology tab displays a "Bubble Chart" that shows the relative size and connection type of all discovered IP hosts.
</span>A kind of chart which shows three dimensional data is known as Bubble chart. It also can be seen as the variation of scatter plot where bubbles replace the data points.
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3 years ago
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sladkih [1.3K]
Can you explain more please??!
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3 years ago
Summary In this lab, you declare and initialize variables in a C++ program. The program, which is saved in a file named NewAge.c
AVprozaik [17]

Answer:

<em>#include <iostream></em>

<em>using namespace std;</em>

<em>int main()</em>

<em>{</em>

<em>  int myNewAge;</em>

<em>  int myCurrentAge = 29;</em>

<em>  int currentYear = 2020;</em>

<em> </em>

<em>myNewAge = myCurrentAge+(2050-currentYear);</em>

<em />

<em>cout<<"My Current Age is "<<myCurrentAge<<". I will be "<<myNewAge<<" in 2050"<<endl;</em>

<em>    return 0;</em>

<em>}</em>

Explanation:

The program is written in C++ language as required. firstly, we declare the three variables:

<em>  </em><em>int myNewAge;</em>

<em>  int myCurrentAge = 29;</em>

<em>  int currentYear = 2020;</em>

Then we calculate the new age as: <em>myNewAge = myCurrentAge+(2050-currentYear);</em>

Using multiple cout operators (<em> </em><<) we display the output nicely as required by the question with this statement

<em>cout<<"My Current Age is "<<myCurrentAge<<". I will be "<<myNewAge<<" in 2050"<<endl;</em>

7 0
3 years ago
What are three common operating systems
Leno4ka [110]

Types of operating systems

The three most common operating systems for personal computers are Microsoft Windows, macOS, and Linux.

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3 years ago
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