1.Write a program that finds all of the prime numbers between 2 and XXXXXXXXXXDoes the use of redundant parentheses affect program performance? 3. Does a block define a scope? 4. Write a program that...

1.Write a program that finds all of the prime numbers between 2 and 100. 2. Does the use of redundant parentheses affect program performance? 3. Does a block define a scope? 4. Write a program that reads characters from the keyboard until a period is received. Have the program count the number of spaces. Report the total at the end of the program. 5. Show the general form of the if-else-if ladder.