Exercise 6:　Simple Functions 1.Write a C program that reads several numbers and uses the function round_to_nearest to round each of these numbers to the nearest integer. The program should print both the original number and the rounded number. 2.Write a program that reads three pairs of numbers and adds the larger of the first pair, the larger of the second pair and the larger of the third pair. Use a function to return the larger of each pair.3.A car park charges a ￡2.00 minimum fee to park for up to 3 hours, and an additional ￡0.50 for each hour or part hour in excess of three hours. The maximum charge for any given 24-hour period is ￡10.00. Assume that no car parks for more than 24 hours at a time.Write a C program that will calculate and print the parking charges for each of(Exercise 6:　Simple Functions 1.Write a C program that reads several numbers and uses the function round_to_nearest to round each of these numbers to the nearest integer. The program should print both the original number and the rounded number. 2.Write a program that reads three pairs of numbers and adds the larger of the first pair, the larger of the second pair and the larger of the third pair. Use a function to return the larger of each pair)