c language

3) Use one-dimensional arrays to solve the following problem. Read in two sets of numbers, each having 10 numbers. After reading all values, display all the unique elements in the collection of both sets of numbers. Use the smallest possible array to solve this problem. (15 pts) 4) Write a program to simulate tossing a "fair" coin. Allow the user to enter the number of tosses. Print the number of tosses that yield heads and the number of tosses that yield tails. What should be the percentage distribution of heads and tails? Make the coin toss a function, save the toss results in an array in the caller function, which is the main, define the array size in symbolic constant and check the user input number and make sure it is smaller than the array size. (15 pts)