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Dima020 [189]
3 years ago
15

Role of computers in everyday life​

Computers and Technology
1 answer:
Simora [160]3 years ago
8 0

Answer:

In modern word everything around us like GPS, ATM machines, cell phones, petrol pumps, portable play stations and all other modern devices use computer controlling units to conduct their featured operations. Surely computers have very elaborated role in daily day life of humans.

Explanation:

hope it helps thxs

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Lucky Sevens. Given a whole number, compute and display how many digits in the number are 7s. For example, the number of 7s in 3
Sveta_85 [38]

Answer:

Code is in both c++ and java

Explanation:

C++ Code

#include<iostream>  

#include <sstream>  // for string streams  

#include <string>  // for string  

using namespace std;  

int main()  

{  

   int num;  

   cout<<"Enter Non-Negative number :";

  cin>> num;

   // declaring output string stream  

   ostringstream str1;  

   // Sending a number as a stream into output  

   // string  

   str1 << num;  

   // the str() coverts number into string  

   string geek = str1.str();  

   int count =0;

  for (int i = 0; i < geek.size(); i++){

    if(geek[i]=='7'){

     count++;  

 }

}

   // Displaying the string  

   cout << "the number of 7s in "<<num<< "is"<<count;

 

   return 0;  

}

Java Code

import java.util.Scanner;

public class LuckySeven{

   public static void main(String[] args){

       Scanner scanner = new Scanner(System.in);

       System.out.print("Enter Number :");

       int number = scanner.nextInt();

       String numberString = number+"";

       int count =numberString.length()- numberString.replaceAll("7","").length();

       System.out.println("Number of 7's in "+numberString+" are "+count);

   }

}

Code Explanation

First we need to take integer number as input from user.

As we need to iterate through all of the digits in number, that's why we need to convert integer to string as string is an array of character so we will iterate through number array and match the total count of 7 on every index.

At the end we will display the total count of 7 in number.

Sample Output

Case 1

Enter Non-Negative number :3482

the number of 7s in 3482 is 0

Case 2

Enter Non-Negative number :372771

the number of 7s in 372771 is 3

6 0
3 years ago
Write a program that prompts the user to enter a point (x, y) and checks whether the point is within the rectangle centered at (
Serga [27]

Answer:

## http://pastebin.com/nQWtHb3B

#use above link for formatted program #Python3

c=[float(cord) for cord in input('Enter a point with 2 coordinate :').split(' ')]

base=[0,0]

w=10

h=5

if((abs(c[0]-base[0])<= float(w)/2) and (abs(c[1]-base[1])<= float(h)/2)):

print('Point (',c[0],', ',c[1],') is in the rectange')

else:

print('Point (',c[0],', ',c[1],') is not in the rectange')

5 0
2 years ago
Wireless networks usually use ____ signals to send data.
barxatty [35]
<span>Wireless networks usually use radio (b) signals to send data. </span>
6 0
3 years ago
Read 2 more answers
A____consists of many users and their information.​
grin007 [14]

<u>Active Directory</u> consist of many users and their information.

7 0
1 year ago
Read 2 more answers
A friend has a CD of one of your favorite artists and has offered to let you copy it.
creativ13 [48]
No; copyright laws protect this artist's rights and I need to purchase the CD if I want it.  

This is due to copyrights being applied at the time of fixation.  In other words, as soon as the words or lyrics have been placed on paper, recorded or put in a computer the ARTIST is protected.
6 0
3 years ago
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