List all of the possible output sequences for the following program:------------------------------------------------------------------------------------------------------code/ecf/waitprob0.c1 int main()2 {3 if (Fork() == 0) {4 printf("a"); fflush(stdout);5 }6 else {7 printf("b"); fflush(stdout);8 waitpid(-1, NULL, 0);9 }10 printf("c"); fflush(stdout);11 exit(0);12 }------------------------------------------------------------------------------------------------------code/ecf/waitprob0.c

The user will be prompted for their name and age, use the DATE module or classassociated with your programming language to acquire the current date and calculate howmany years it is until the user is eligible for retirement. (age 65) The program will displayone of three alternate outputs based on how long it will be until the user retires. Youwill determine the range of years and text associated with each of the three alternatives

import unittest# --------------------------------------------------------------# First digit of argument# --------------------------------------------------------------def firstdigit1(number) :'''Assume that number is an integer.Return the first digit of number.For example, if number is 523, then return 5If number is -52, return 5If number is 0, return 0'''pass# --------------------------------------------------------------# The Testing# --------------------------------------------------------------class myTests(unittest.TestCase):def test1(self):self.assertEqual(firstdigit1(57), 5)def test2(self):self.assertEqual(firstdigit1(0), 0)def test3(self):self.assertEqual(firstdigit1(-4343), 4)def test4(self):self.assertEqual(firstdigit1(10), 1)def test5(self):self.assertEqual(firstdigit1(500213), 5)def test6(self):self.assertEqual(firstdigit1(-47772210), 4)if __name__ == '__main__':unittest.main(exit=True)

What is the overall speedup if you make 25% of a program 75 times faster?