1.write a program that accept a characters from the user and append them to the end of the file.
2. create a software implemention of logic gates for the AND, NOT and NAND operators. using the peudocode show how your program can implement. all these three operations by calling only the function for AND and NOT
3. your programs change the channel of 4 tv based on a single digit input from the user. write the pseudocode to implement this scenario.