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Gnesinka [82]
3 years ago
13

Consider the following program segment. ifstream inFile; //Line 1 int x, y; //Line 2 ... //Line 3 inFile >> x >> y;

//Line 4 Which of the following statements at Line 3 can be used to open the file progdata.dat and input data from this file into x and y at Line 4?
a. inFile.open("progdata.dat");
b. open(inFile, "progdata.dat");
c. inFile (open, "progdata. dat");
d. open.inFile("progdata.dat");
Computers and Technology
1 answer:
harina [27]3 years ago
3 0

Answer:

The answer to this question is the option "a".

The statement for opening file can be given as:  

inFile.open("progdata.dat");

Explanation:

In the above statement, this statement is part of the c++ programming language. To open any file we use the following syntax that can be given as:

Syntax:

inFile.open(filename, mode);

In the above syntax inFile.open() is a function that opens the file. In this function, we pass two parameters that are filename, mode. Where filename is the name of the file which we want to open. In the filename, we write file names with the path of the file like(C:\Users\Public\Music\Sample Music\abc.dat) where (C:\Users\Public\Music\Sample Music) is the path of the file and (abc.dat) is a file name. In the mode parameter, it provides the mode in which we want to open a file. There are two types of read mode and write mode. The default mode is read mode.

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Write a function called which_vowels_present that takes a single string parameter. Complete the function to return a list of str
romanna [79]

Answer:

import java.util.ArrayList;

import java.util.List;

public class Vowels {

   public static void main(String[] args) {

   String word = "I am David from Nigeria";

       System.out.println(which_vowels_present(word));

   }

   public static List which_vowels_present(String enteredWord){

       List<Character>list = new ArrayList<>();

       String word = enteredWord.toLowerCase();

       for (int i =0; i<word.length(); i++){

           if (word.charAt(i) == 'a' || word.charAt(i) == 'e' || word.charAt(i) == 'i'

                   || word.charAt(i) == 'o' || word.charAt(i) == 'u') {

               list.add(word.charAt(i));

           }

       }

       return list;

   }

}

Explanation:

  • Using Java programming Language
  • Import java.util.ArrayList; and java.util.List
  • Create the method which_vowels_present which accepts a string parameter
  • Within the method create a list object
  • Use a for loop to iterate the string. within the for loop use an if statement to check individual characters of the string if any is a vowel, add it to the list
  • return the list
  • In the main method, create a test string, call the method and pass the string as parameter

5 0
3 years ago
What is the solution to the equation ?
ki77a [65]
There’s no solution to the equation
4 0
3 years ago
Read 2 more answers
g If a class named Student has a data member named gpa , and one of its member functions has a parameter also named gpa , how ca
victus00 [196]

Answer:

By using the this keyword

Explanation:

The this keyword in java is used for pointing the current object or current variable .The this keyword is removing the ambiguity among the characteristics of the class as well as the variables with the similar name.

In the given question if the class student has member variable gpa also we have a method having the argument gpa with the help of this keyword we can refer the gpa variable inside the method .

Following are the implementation of the given question

public class Main // main class

{

 int gpa; // variable declaration

 public Main(int gpa) // constructor

 {

   this.gpa = gpa; // this keyword

 }

 public static void main(String[] args) // Main method

 {

   Main m= new Main(55); // creating object of class

   System.out.println("The Value of gpa is : " + m.gpa); // display value

 }

}

Output:

The Value of gpa is :55

5 0
4 years ago
What are examples of object types that can be viewed in the Navigation pane? Check all that :
TiliK225 [7]

Answer:

2.) Forms

4.) Queries

6.) Tables

Explanation:

8 0
3 years ago
Give your own example of a nested conditional that can be modified to become a single conditional, and show the equivalent singl
victus00 [196]

Answer:

following are the program to the given question:

Program:

x = 0#defining an integer variable that holds a value

if x < 0:#defining if that checks x less than 0

   print("This number ",  x, " is negative.")#print value with the message

else:#defining else block

   if x > 0:#defining if that checks x value greater than 0

       print(x, " is positive")#print value with message

   else:#defining else block

       print(x, " is 0")#print value with message

if x < 0:#defining another if that checks x less than 0

   print("This number ",  x, " is negative.")

elif (x > 0):#defining elif block that check x value greater than 0

   print(x, " is positive")#print value with message

else:#defining else block

   print(x, " is 0")#print value with message

Output:

Please find the attachment file.

Explanation:

In this code, an x variable is defined which holds a value that is "0", in the next step nested conditional statement has used that checks the x variable value and uses the print method that compares the value and prints its value with the message.

In another conditional statement, it uses if that checks x value less than 0 and print value with the negative message.

In the elif block, it checks x value that is greater than 0 and prints the value with the positive message, and in the else block it will print the message that is 0.

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4 years ago
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