WRITE IN C PROGRAM AND APPLY STACKS (show output also)

1. Write a program that will continuously accept a character and store in a stack until a vowel is entered, then display the letters in reverse order of their arrival.

2. Write a program that will continuously accept a character and store in a stack until an asterisk (*) is entered, and then display the third to the last character entered.

3. Write a program that takes from standard input an expression without left parentheses and prints the equivalent infix expression with the parentheses inserted. For example, given the input: 1 + 2 ) * 3 - 4 ) * 5 - 6 ) ) ) your program should print ( ( 1 + 2 ) * ( ( 3 - 4 ) * ( 5 - 6 ) )