Write a C program to create two processes. Proccess 1 takes a string and passes it to Proccess 2. Proccess 2 concatenates the received string with another string without using a string function and sends it back to Process 1 for printing to the console.

In python Imagine that we are creating an app to manage the queue at the Secretary of State office. As customers arrive, they are added to the end of the queue. When workers are available to help the customers, they will call the name of the first person in the queue, and remove them from the queue. Another option for the app is to print out the entire queue so customers can see where they stand. The menu options are (1) Add a customer to the queue (2) Serve the customer (3) Print out the queue (4) Quit the application. At the beginning of the day, the queue is empty. When a customer is added to the queue, you will have to prompt for the customer's name. When a customer is served, you should print the message "Now serving customer Jon." if the first name in the queue is Jon, so Jon is called to the counter and removed from the queue. If the app user enters anything besides '1', '2', '3', or '4', you should print out the message "Unknown menu option." and display the menu again. When…

Write a C program in Ubuntu to copy a file and display in new file named Lab.txt

Write a program to handle a user's rolodex entries. (A rolodex is a system with tagged cards each representing a contact. It would contain a name, address, and phone number. In this day and age, it would probably have an email address as well.) Typical operations people want to do to a rolodex entry are: 1) Add entry 2) Edit entry 3) Delete entry 4) Find entry 5) Print all entries 6) Quit You can decide what the maximum number of rolodex entries is and how long each part of an entry is (name, address, etc.). When they choose to edit an entry, give them the option of selecting from the current rolodex entries or returning to the main menu — don't force them to edit someone just because they chose that option. Similarly for deleting an entry. Also don't forget that when deleting an entry, you must move all following entries down to fill in the gap. If they want to add an entry and the rolodex is full, offer them the choice to return to the main menu or select a person to overwrite. When…