2. The C- code is given to you3. if fp= fopen ( filename, r ))printf( "Error. Cannot read from file $s. Exit\n",NULL ) {==4.5.filename ;6.exit 1 );7. }8.9. while fgets (line, sizeof line, fp) != NULL ) {10. printf("Successfully copied");11.}12. fclose fp );Write down how many systems call this program invoke? Explain what type of system call itis.

Step 1: if ( { fp = fopen ( filename, r ) ) == NULL ) {f ( "Error. Cannot read from file ss.…

Answered: = fope REinti( "Erron filen exiE1 );…

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter13: File Input And Output

Section: Chapter Questions

Problem 7PE

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#include #includecstdlib.h> int main(void){ int number , reverse = 0, digit, temp; FILE *infile, "outfile; int status; //open the input file and check if an error occurred infile = fopen( "numbers.txt" , "r" );//open the input file if(infile == NULL){ printf("Error: File \"numbers.txt\" not foundl\n"); exit (1); //open the output file and check if error occurred outfile = fopen( "Report.txt", "w" ); if(outfile == NULL)X printf("Error: File \"Report.txt\" can not be created!\n"); exit (1); status = fscanf(infile, "%d" , &number); /read first number from the file while(status != EOF){ printf("%d is read from the file\n" , number); fprintf(outfile, "%8d" , number); //To read all the numbers in the file //compute the reverse of the number temp = number ; reverse = 0; while(temp != 0)X digit = temp % 10; reverse = reverse * 10 + digit ; temp = temp/10; printf("The reverse is: %d \n", reverse); fprintf(outfile , "%8d" , reverse); //check whether the number is palindrome if(number ==…
#include #includesstdlib.h> int main(void){ int number , reverse = 0, digit , temp; FILE *infile, *outfile; int status; //open the input file and check if an error occurred infile = fopen( "numbers.txt" , "r" ); //open the input file if(infile == NULL){ printf("Error: File \"numbers.txt\" not found!\n"); exit (1); //open the output file and check if error occurred outfile = fopen( "Report.txt" , "w" ); if(outfile == NULL){ printf("Error: File \"Report.txt\" can not be created!\n"); exit (1); status = fscanf(infile , "%d" , &number); //read first number from the file /To read all the numbers in the file while(status != EOF){ printf("%d is read from the file\n" , number); fprintf(outfile , "%8d" , number); //compute the reverse of the number temp = number ; reverse = 0; while(temp != 0){ digit = temp % 10; reverse = reverse * 10 + digit; temp = temp/10; printf("The reverse is: %d \n", reverse); fprintf(outfile , "%8d" , reverse); //check whether the number is palindrome if(number ==…
3.Which of the following will read a string from a file with FILE* fpto char myString[81] properly (safely): fscanf(fp, "%s", myString ); fgets(myString, fp); fgets(fp, 81, myString); correct : fgets(myString, 81,fp) fscanf(fp,"%80s", myString); 4. If you issue the statement fpIn = fopen("myfile.dat", "a");and dat does not exist, the computer will: return NULLto fpIn as the file does not exist create the file in write mode, and position the file pointer at the beginning of the file create the file in write mode, close the file and return a warning open a file that most closely resembles the name 'myfile.dat'
...ex2_main.cpp#include <stdio.h>#include <stdlib.h>#include "lab2_ex2.h" #define FILENAME "statement11.txt" int main(){ // 1. Acquire the text from file char *text = read_text_file(FILENAME); // Note: Caller should free the memory allocated printf("%s\n", text); // 2. Compute the readability and display the grade level float readability = get_readability(text); printf("Readability index = %f\n", readability); display_level(readability); // 3. Free resources, e.g. allocated memory by read_text_file() function free(text); return 0;}...lab2_ex2.cpp/* EDIT THIS FILE TO SOLVE THE LABORATORY EXERCISES*/ #include <stdio.h>#include <ctype.h>#include <string.h>#include <math.h>#include <stdlib.h>#include "lab2_ex2.h" /*Assume that a letter is any lowercase character from a to zor any uppercase character from A to Z*/int alpanumeric_count(const char *text){ int count = 0; /* YOUR CODE HERE!!! */ return…
This class prints the first several lines of a file. The default is to print 5 lines, but the -n flag can specify a different number. If no file is specified on the command line, read from standard input. The code bekoow is to help get started. #include <stdio.h> #include <stdlib.h> // You may assume that lines are no longer than 1024 bytes #define LINELEN 1024 static void usage (void); int main (int argc, char *argv[]) { return EXIT_SUCCESS; } static void usage (void) { printf ("head, prints the first few lines of a file\n"); printf ("usage: head [FLAG] FILE\n"); printf ("FLAG can be:\n"); printf (" -n N show the first N lines (default 5)\n"); printf ("If no FILE specified, read from STDIN\n"); }
2. Look at the code sample below, find the errors and write out the corrected code. /* This program contains errors! */ catch (FileNotFoundException e) { System.out.println("File not found."); } try { File file = new File("MyFile.txt"); Scanner inputFile = new Scanner(file);
Consider the following code segment: done = False while not done : try : filename = input("Enter the file name: ") inFile = open (filename, "r") except IOError : print ("Error: File not found.") It is supposed to keep on prompting the user for file names until the user provides the name of a file that can be opened successfully. What line of code should be placed in the blank to achieve this goal? Select one: done = inFile done = True done = not inFile done = False
The function file_first_chars in python takes one parameter, fname, the name of a text file, and returns a string made up of the first character from each line in the file. You may assume there are no blank lines in the file. Hint: Use a for loop to iterate over the lines of the file and accumulate the string of first characters. NOTE: Return the function, don't print For example: Test Result print(file_first_chars("wordlist1.txt")) hsaem
You have the following function. 1 def funct(a): file = open('file.txt') 3 while True: line = file.readline() if a in line: 4 print(line) file.close() 7 The contents of the file named file.txt is as follows: python python is great! python is the best python is amazing! What would the value of a be if the output is: python is great! python is amazing! Answer:
In c++ write a code that tells a user to enter a filename and read that text file line by line.
1. Write a program that opens an output file with the filename my_name.txt, writes your name to the file, then closes the file. 2. Write a program that opens the my_name.txt file that was created by the program in problem 1, reads your name from the file, displays the name on the screen, then closes the file. Write code that does the following: opens an output file with the filename number_list.
Chapter 4. PC #6. File Letter Counter (page 264) Write a program that asks the user to enter the name of a file, and then asks the user to enter a character. The program should count and display the number of times that the specified character appears in the file. Class name: FileLetterCounter Hints: Hint 1. To read a single character from the keyboard, you need to read a full line and then take the first character in position 0. Hint 2. To count the occurrences of a given characters in a file you need to read the file line-by-line using a while loop, then for each line check all characters in all positions and increment the character counter for each occurrence. This will require to have a for-loop nested inside the while-loop.

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EBK JAVA PROGRAMMING

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9781337671385

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FARRELL

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EBK JAVA PROGRAMMING

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ISBN:

9781337671385

Author:

FARRELL

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CENGAGE LEARNING - CONSIGNMENT

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= fope REinti( "Erron filen exiE1 ); while LEgets (1: REAnti("Success: