Checkpoint 11.39 Write a statement that opens a file Customers.dat as a random access file for both reading and writing. The created object should be fstream. m = new RandomAccessFile("Customers.dat" "rw"); }| Submit X Incorrect. Try again.
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- Exercise 2: Solve the programming exercise P10.19 on Page 536 on the book. Note: coin class provided in theMoodle.Write a program that reads in a set of coin descriptions from a file. The input file has the formatcoinName1 coinValue1coinName2 coinValue2. . .Add a methodvoid read(Scanner in) throws FileNotFoundExceptionto the Coin class of Section 7.2. Throw an exception if the current line is not properly formatted. Then implement a methodstatic ArrayList<Coin> readFile(String filename) throws FileNotFoundExceptionIn the main method, call readFile. If an exception is thrown, give the user a chance to select another file. If you read all coins successfully, print the total value. ................... This is coin class: ................... /** A coin with a monetary value. */ public class Coin { private double value; private String name; /** Constructs a coin. @param aValue the monetary value of the coin @param aName the name of the coin */…Fix the spwd code so it works: /* spwd.c: a simplified version of pwd** starts in current directory and recursively* climbs up to root of filesystem, prints top part* then prints current part** uses readdir() to get info about each thing** bug: prints an empty string if run from "/"**/#include <stdio.h>#include <sys/types.h>#include <sys/stat.h>#include <dirent.h>ino_t get_inode(char *);void printpathto(ino_t);void inum_to_name(ino_t , char *, int );int main(){printpathto( get_inode( "." ) ); /* print path to here */putchar('\n'); /* then add newline */return 0;}void printpathto( ino_t this_inode )/** prints path leading down to an object with this inode* kindof recursive*/{ino_t my_inode ;char its_name[BUFSIZ];if ( get_inode("..") != this_inode ){chdir( ".." ); /* up one dir */inum_to_name(this_inode,its_name,BUFSIZ);/* get its name*/my_inode = get_inode( "." ); /* print head */printpathto( my_inode ); /* recursively */printf("/%s", its_name ); /* now print…from Big Java 6th. Edition. Ch.11 P11.12: the capacitor is represented by the equation v(t) = B(1 - e-t/(RC)) Suppose the parameters of the electric circuit are B = 12 volts, R = 500 Ω, and C = 0.25 μF. Consequently v(t) = 12(1 – e-0.008t) where t has units of μs. Read a file params.txt containing the values for B, R, C, and the starting and ending values for t. Write a file rc.txt of values for the time t and the corresponding capacitor voltage v(t), where t goes from the given starting value to the given ending value in 100 steps. In our example, if t goes from 0 to 1000 μs, the twelfth entry in the output file would be: 110.00 7.02261 Make sure that your program catches the FileNotFoundException that can occur if your input file params.txt cannot be found. Your program should catch this exception, and then prompt the user for a file name again until a valid file is entered. I hbelieve I have everything needed, but I cannot figure out how to write in the…
- Write an automated censor program that reads in the text from a file andcreates a new file where all of the four-letter words have been replaced by11 **** 11• You can ignore punctuation, and you may assume that no wordsin the file are split across multiple lines.Install and load readr: library(readr). Then, import a text file with values separated by a single space: single_delimited.txt (see attached) tell R that missing values are represented with a period in the data we are importing (use the read_delim())Modify the program 11-10 from pages 753-755 as follows: 1. To Length class files (Length.h and Length.cpp) add the operator overload for stream insertion (<<) and stream extraction (>>) from page 759. You should not use the modified version of class Length from page 759 because it contains more operator overloads. Instead of typing you can use copy/paste from Length1.h and Length1.cpp respectively. 2. In main() replace the lines 11-16 with appropriate usage of stream extraction overload (>>) to change "first" and "second" objects with values inputted by the end user. 3. In main(), replace the output on lines 21,22 and 25,26 with appropriate usage of stream insertion (<<) operator. The resulting output should be identical with the unmodified version of the program. 11-10: // This program demonstrates the Length class's overloaded // +, -, ==, and < operators. #include <iostream> #include "Length.h" using namespace std; int main() { Length first(0),…
- You would use a stream's clear method to: Multiple answers: Multiple answers are accepted for this question a empty the output buffer b reset flags after a failed translation/extraction c clear the screen d clean up after a bad file open attempt e forget an end-of-file encounter before seeking back to the beginning of the streamtask 14.1 in java Follow these steps:● Create a new java file called MyFile.java● Write code to read the content of the text file input.txt. For each line ininput.txt, write a new line in the new text file output.txt that computesthe answer to some operation on a list of numbers.● If the input.txt has the following:Min: 1,2,3,5,6Max: 1,2,3,5,6Avg: 1,2,3,5,6Your program should generate output.txt as follows:The min [1, 2, 3, 5, 6] is 1.The max of [1, 2, 3, 5, 6] is 6.The avg of [1, 2, 3, 5, 6] is 3.4.● Assume that the only operations given in the input file are min, max andavg and that a list of comma-separated integers always follows theoperation. You should define the functions min, max and avg that take ina list of integers and return the min, max or avg of the list.● Your program should handle any combination of operations and anylength of input numbers. You can assume that the list of input numbersare always valid integers and that the list is never empty.● Compile, save and run…Python 3.7.4 Store four file objects corresponding to the files winter2003.txt , spring2003.txt, summer2003.txt, and fall2003.txt in the variables winter, spring, summer, and fall (respectively), and open them all for reading.
- 10-8. Cats and Dogs: Make two files, cats.txt and dogs.txt. Store at least three names of cats in the first file and three names of dogs in the second file. Write a program that tries to read these files and print the contents of the file to the screen. Wrap your code in a try-except block to catch the FileNotFound error, and print a friendly message if a file is missing. Temporarily rename each of your files, and make sure the code in the except block executes properly. Make sure an exception is caught for either file missing.Write a Java program to perform the following tasks:The program should ask the user for the name of an input file (scores.txt). Theinput file should contain 10 records. Each record in the input file shouldconsist of a name and score between 0 and 100 (inclusive). Eg: fred 95The program should open the input file as a text file (if the input file does notexist it should throw an exception) and read the contents line by line.Store each record in an array of a user-defined Score class. The Score classcan be kept very simple with 2 instance variables, a default constructor, getand set methods for the instance variables.Now process the array of Score class objects to determine:• The average of all scores• The largest score• The smallest scoreNow output the above stats and all records to the file output.csv. The first linewritten to this file should consist of the number of records, the average score,the largest score and the smallest score; these values should be commaseparated. Finally,…Complete a program that reads a vector index as input and outputs the element of a vector of 10 names at the index specified by the input. Use a try block to output the name and a catch block to catch any out_of_range exceptions. When an out_of_range exception is caught, output the message from the exception object and the first element in the vector if the index is negative or the last element if the index is greater than the size of the vector. Hint: Format the exception outputs using the what() function from the exception object. Do not hard code the exception messages. Ex: If the input of the program is: 5 the program outputs: Jane Ex: If the input of the program is: 12 the program outputs: Exception! vector::_M_range_check: __n (which is 12) >= this->size() (which is 10) The closest name is: Johnny Ex: If the input of the program is: -2 the program outputs: Exception! vector::_M_range_check: __n (which is 18446744073709551614) >= this->size() (which is 10) The closest…