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Elis [28]
3 years ago
10

A browser is an example of a​

Computers and Technology
1 answer:
Inessa [10]3 years ago
3 0

Answer:

User Interface, Website

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Which of the following statements opens the file info.txt for both input and output? a) dataFile.open("info.txt", ios::in &&
azamat

Answer:

Correct answer is D

Explanation:

open is a function in c++ programming language used to interact with files.The function takes two parameters as input

  1. File name
  2. mode

File Name

File name is a string name of file to be opened.This is a compulsory parameter for open method.

Mode

Mode is an optional parameter in open function.Following are the accepted values of mode parameter

Prefix ios:: is added to start of each

  1. in (Open file in input mode for writing data to file)
  2. out (Open file in output / read-only mode to read data from file)
  3. binary (Open file in binary format)
  4. ate (Set the starting point of file to the end of file. Default starting point of file is start of file)
  5. "trunc" (If file is opened multiple times all previous data is replaced with new data)
  6. app (All operations of output are performed the end of file)

Use | operator to use multiple modes at a time.

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3 years ago
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A ________ is a collection of forms, reports, queries, and programs that serves as an intermediary between users and database da
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<span>With the use of a database application people can store and retrieve large quantities of data almost instantaneously. Database applications can also be used to present the information in easy to read and understand forms. Database applications serve as an intermediary between the raw data and a user, making it easier to sort and use the data.</span>
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Write a chemical reaction to show that nitric acid contains nitrogen​
sleet_krkn [62]

Answer:

HNO3 &NO2

Explanation:

7 0
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Which setting indents all but the first line of a paragraph by the selected length?
Phoenix [80]

Answer:

Hanging

Explanation:

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Write a program that unpickle's employee dictionary and while reading from the dictionary, it allows users to lookup an employee
melamori03 [73]

Answer:

Check the explanation

Explanation:

from Employee import *

import pickle

import random

def unpickle_employee(filename):

file=open(filename,'rb')

data=pickle.load(file)

file.close()

return data

def pickle_employee(data,filename):

file=open(filename,'wb')

pickle.dump(data,file)

file.close()

if __name__=='__main__':

filename="Employees.dat"

'''

E=Employee("Ajay",1,"R&D","Manager")

data={}

data[1]=E

pickle_employee(data,filename)

'''

data=unpickle_employee(filename)

 

while True:

print("\nData In Employee.dat")

for d in data:

print("Employe data: ",data[d].get_name(),"({},{},{})".

format(data[d].get_id_number(),data[d].get_department(),data[d].get_job_title()))

 

print("\n\n\t\tMenu")

print("To add new Employee, Enter a")

print("To update any Employee, Enter u")

print("To delete any Employee, Enter d")

print("Enter anything to quit")

choice=input("Enter: ")

if choice=='a':

id_number=random.randrange(100,200,1)

while id_number in data:

id_number+=1

if id_number>=200:

id_number=100

name=input("Enter the Name: ")

department=input("Enter the Department: ")

job_title=input("Enter the job title: ")

E=Employee(name,id_number,department,job_title)

data[id_number]=E

elif choice=='u':

id_number=int(input("Enter the Employee id_number to update: "))

for d in data:

print(id_number,d,d==id_number)

if id_number in data:

print("Employe data: ",data[id_number].get_name(),"({},{})".

format(data[id_number].get_department(),data[id_number].get_job_title()))

print("\nPlease Enter the details")

name=input("Enter the Name: ")

department=input("Enter the Department: ")

job_title=input("Enter the job title: ")

E=Employee(name,id_number,department,job_title)

data[id_number]=E    

else:

print("Employee doesn't exist\n")

elif choice=='d':

id_number=int(input("Enter the Employee id_number to delete: "))

if id_number in data:

print("Employe data: ",data[id_number].get_name(),"({},{})".

format(data[id_number].get_department(),data[id_number].get_job_title()))

choice=input("\nPlease Enter y to confirm, anything else to cancel: ")

if choice=='y':

del data[id_number]

else:

print("Employee doesn't exist\n")

else:

break

pickle_employee(data,filename)

7 0
3 years ago
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