WGU - C191 QUESTIONS AND ANSWERS ALREADY GRADED A+

Which operator should be used to determine if a number is evenly divisible by 5? A + B - C * D % D A car drove 200 miles using 10 gallons of fuel. Which operation should be used to compute the miles per gallon, which is 20? A Addition B Subtraction C Multiplication D Division D Brainpower 0:03 / 0:15 A variable should hold a person's height in meters. Which data type should the variable be? A Integer B Float C String D Boolean B A variable should hold the names of all past U.S. presidents. Which data type should the variable be? A Integer array B Float array C String array D Boolean array C A program uses the number of seconds in a minute in various calculations. How should the item that holds the number of seconds in a minute be declared? A Constant float userTime B Variable float userTime C Constant integer secondsPerMinute D Variable integer secondsPerMinute C A program determines if a user's age is high enough to run for U.S. president. The minimum age requirement is 35. How should the item that holds the minimum age be declared? A Constant integer minAge B Variable integer minAge C Constant integer 35 D Variable integer 35 A Given integer x = 3 and integer y = 5. What is the value of the expression ( x / 2.0) + y? A 5.0 B 6.0 C 6.5 7 7.5 C Given float x = 10.2 and float y = 1.0. What is the value of the expression x / y ? A 0.0 B 1.0 C 10 D 10.2 D What kind of operator is the == in the expression i == 20? A Assignment B Arithmetic C Equality D Logical C What is the purpose of parentheses () in a programming expression? A To print expressions B To group expressions C To run expressions D To compose expressions B Given float x = 3.0. Which expression evaluates to 2.0? A x / 3 * 2 + 2 B x - 2/3 C x + 0.5 /2 D x / 2 + 0.5 /2 + .25 D Which expression evaluates to true only when the user is within 3 years of 21 years, given a variable x containing a user's age? A x >= 18) or ( x <= 24) B ( x >= 18) and ( x <= 24) C ( x < 18) or ( x > 24) D ( x < 18) and ( x > 24) B Which data type is used for items that are measured in length? A Integer B Float C String D Boolean B Which data type should be used to keep track of how many planes are in a hangar? A Integer B Float C String D Boolean A A function should convert hours and minutes to seconds, such as converting 1 hour and 10 minutes to 4,200 seconds. What should be the input to the function? A Hours only B Minutes only C Hours and minutes D Hours, minutes, and seconds C A function returns a number x cubed. For example, if x is 3, the function returns 3 3 3, or 27. What should be the input to the function? A x B x, x C x, x, x D 27 A A function calculates the weight difference (Diff) given two sample weights (S1 and S2). What should be the output from the function? A S1 only B S2 only C S1 and S2 D Diff D function P(integer x) returns integer y y = 2 * x What does P(5) evaluate to? A 2 B 5 C 10 D 25 C Function F() Put "Hey" to output What entire output appears after three successive calls to F()? A Hey B HHHey C HeyHeyHey D Hey Hey Hey C What is a valid user-defined function name? A A reserved word B Any valid identifier C Any variable name D A floating-point number B A function MyFct has an input x and an output z. What does MyFct return? A Nothing B x only C z only D x and z C What is the return value of a function? A Output of a function B Call to run the function C Data passed to the function D Variable in the declaration of the function A A program should continue accepting input numbers, adding each to a sum, until a 0 is input. Which control structure should be used? A If statement B For loop C Multiple if statements D While loop D Joe is building an online game. He wants to provide a riddle and have the player guess the answer. The game needs to prompt the user to enter the answer, check to see if it the input provided does not match the correct answer, and continue prompting the user until the answer entered matches the correct answer. Which control structure supports Joe's needs? A For loop B While loop C Do-while loop D If-else branch C What is put to output by the following pseudocode? x = 3 do Put x to output Put " " to output x = x - 1 while x > 0 A 3 2 1 0 B 3 2 1 0 -1 C 2 1 0 D 3 2 1 D A programmer has developed the following code: count = 0 while count is less than 5: print 'Hello' What is the result of implementing this code? A 'Hello' will print four times. B 'Hello' will print five times. C The program will throw an error. D 'Hello' will print indefinitely. D What is the loop expression in the following pseudocode? i = 0 while i < 20 Put i to output i = i + 1 A i B i<20 /> C i = 0 D i = i + 1 B What is the loop variable initialization in the following pseudocode? y = 0 s = 100.0 while y < 10 s = s + (s * 5.0) y = y + 1 A y = 0 B y = y + 1 C s = 100.0 D s = s + ( s * 5.0) A