Write a program that allows the user to create and maintain a list of contacts in a file named MyContacts.txt. Each contact will have a name and a phone number. In the file, each line should have a contact's name followed by their phone number you may assume that every contact's name will just be a single word (i.e. no last names) For evamnle if vour fle bas twO contacts in it it might look something like this:

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Hello. Please answer the following C programming question correctly by fulfilling all of the directions. Please do not use very advanced syntax to solve the problem and do not use string.h and all functions in this library.  Also, please create a complete file header based on the file header style picture.  *If correctly fulfill and answer all of the directions correctly, I will give you a thumbs up. Thanks. —------------------------------------------------------------------------------------------------------------------ Question - Instructions: ** For the following question and its steps, do not use string.h and all functions in this library.  Step 1. Write a function to reverse a string. Function name: reverse_str Return type: void Parameter list: a pointer to a char Please don’t print the array backward. Don’t use another array to make the string reversed. You should reverse the string in place. Function Description: This function reverses a string by swapping the first character…

Assignment #2 Instructions: Through this programming assignment, the students will learn to do the following: Learn to work with command line options and arguments Gain more experience with Makefiles Gain more experience with Unix Learn to use some of the available math functions available with C Usage: mortgagepmt [-s] -r rate [-d downpayment] price In this assignment, you are asked to perform a mortgage payment calculation. All information needed for this will be passed to the program on the command line. There will be no user input during the execution of the program   You will need a few pieces of information. The price of the home and the amount of the down payment. You will also need to know the interest rate and the term of the mortgage. To figure your mortgage payment, start by converting your annual interest rate to a monthly interest rate by dividing by 12. Next, add 1 to the monthly rate. Third, multiply the number of years in the term of the mortgage by 12 to calculate the…