Question 4 [5 points) Write a program that calculates and prints the sum of the even integers from to 20. Question 5 [6 points] Write a program that displays the following on the screen. Use nested loops to do this. 3 21 3 21 3 21 321 Question 6 [6 points) Consider the following code segment for ( int 1- ;17:1) if (aie) else What are the values of array b if Array a Array b Question 7 [5 points] Write a program that asks the user to enter a string or an array of c then you have to check if character 'a" appears within the string characters by o a message "character a is found" or "character a is not found". Good Luck