Write a C program to Implement a system of three processes which read and write numbers to a file. Each of the three processes P1, P2, and P3 must obtain an integer from the file (these instructions must be executed 200 times). The file only holds one integer at any given time. Given a file F, containing a single integer N, each process must perform the following steps 1. Fork two processes For 200 times: 2. Open F 3. Read the integer N from the file 4. Close F 5. Output N and the process' PID (On the screen) 6. Increment N by 1 7. Open F 8. Write N to F (overwriting the current value in F) 9. Close F

Write a java program that reads a file named input.txt and writes a file that contains the same contents, but is named output.txt. The input file will contain more than one line when tested, so too should the output file and the program must read the file line by line and write the file itself

Write a C program that reads real numbers from a data file named "numbers.txt", one-by-one. For each number, the program checks whether the number is positive or negative, and writes only the positive numbers to a text file named "result.txt". The program must use the necessary code to handle File not found/not created errors. Below are examples of the input and output files 3.14 3.14 -25.5 10.25 -22.7 20.0 10.25 20.0 -18.2 тиmbers.txt Results.txt #include int main(void) { //Declare required variables //open required files /*executable statements for: reading a number from input file 2. writing only the positive numbers to output file The above 2 steps are repeated as long as the input file has more numbers */ 1. //close the files printf("\n"); printf("\n"); return 0;

Write a C program that takes the name of a text file as a input, reads its contents, and then replaces all vowels in the file with the symbol "#". After that it should write back the modified content in the same file and display the message indicating that the file has been successfully modified.

A process P forks a child C. After the fork(), both parent and child open() the same file for writing using the flag O_WRONLY resulting in descriptor fd. Subsequently P write()'s out a line containing the single character 1 to fd. C write()'s out a line containing the single character 2 to fd. C write()'s out a line containing the single character 3 to fd. P write()'s out a line containing the single character 4 to fd. Assuming that the above actions are ordered chronologically: a )What will be the contents of the file after the above sequence of actions? b ) How can you set things up so that the file captures all of the output?

Write a program in C++ that reads data from a file. Create dynamic memory according to the data. Now your task is to perform the following task. Row wise Sum Column wise Sum Diagonal wise Sum   Example   data.txt 4 5 1.6 10.2 33.7 99 20.5 3 44 50 96.1 2 8 9 4 74 50 99 19.1   Output: Sum row wise: 165, 191, 17, 242.1 Sum col wise: 127.6, 120.1, 228.8, 118.1, 20.5 Sum diagonal wise: Not Possible   Note: You are restricted to use pointers and your function should be generic as we discussed in class. Avoid memory wastage, memory leakage, dangling pointer. Use regrow or shrink concepts if required.

Write a C program that reads real numbers from a data file named "numbers.txt", one-by-one. For each number, the program checks whether the number is positive or negative, and writes only the positive numbers to a text file named "result.txt". The program must use the necessary code to handle File not found/not created errors. Below are examples of the input and output files 3.14 3.14 -25.5 10.25 -22.7 20.0 10.25 20.0 -18.2 тиmbers.txt Results.txt #include int main(void) { //Declare required variables //open required files /*executable statements for: reading a number from input file 2. writing only the positive numbers to output file The above 2 steps are repeated as long as the input file has more numbers */ 1. //close the files printf("\n"); printf("\n"); return 0;

Suppose a library is processing an input file containing the titles of books in order to identify duplicates. Write a program that reads all of the titles from an input file called bookTitles.inp and writes them to an output file called duplicateTitles.out. When complete, the output file should contain all titles that are duplicated in the input file. Note that the duplicate titles should be written once, even though the input file may contain same titles multiple times. If there are not duplicate titles in the input file, the output file should be empty. Create the input file using Notepad or another text editor, with one title per line. Make sure you have a number of duplicates, including some with three or more copies.

Write a C program that reads real numbers from a data file named "numbers.txt", one-by-one. For each number, the program checks whether the number is positive or negative, and writes only the positive numbers to a text file named "result.txt". The program must use the necessary code to handle File not found/not created errors. Below are examples of the input and output files 3.14 3.14 -25.5 10.25 -22.7 20.0 10.25 20.0 -18.2 тиmbers.txt Results.txt #include int main(void) { //Declare required variables //open required files /*executable statements for: reading a number from input file 2. writing only the positive numbers to output file The above 2 steps are repeated as long as the input file has more numbers */ 1. //close the files printf("\n"); printf("\n"); return 0;

Write a C/C++ program that accepts 2 command-line arguments: filename of a file of small instructions to interpret number of pages of space to acquire via mmap The contents of the file will consist of sets of these commands: