If Statements

Question 1

Write a program that allows the user to enter their age. If the age is 18 or older, print ‘You are eligible to vote.’ Otherwise, print ‘You are not eligible to vote.’

Question 2

Write an example of an if, else if, and else statement

Answer 2

if (intVariable = 0){
con.println(“1 solution”);
}else if (intVariable > 0){
con.println(“2 zeros”);
}else{
con.println(“no zeros”);
}

Question 3

Function of Logic Statements

Answer 3

take two or more numbers/variables
compare
based on comparison, perform an action (or don’t)

Question 4

||

Answer 4

OR logic symbol

Question 5

Math Logic Comparison Symbols

Answer 5

== exactly equals to
!= not equal to
<= less than or equal to
>= greater than or equal to
< less than
> greater than

**note: the above symbols compare 2 numbers

Question 6

Function of subString(#1, #2)

Answer 6

grabs specific letters from a string

** note: putting one number will not change the string

#1 is inclusive, #2 is exclusive (i.e. first letter is #0 and so on…)

Question 7

AND logic symbol

Answer 7

&&

Question 8

alternate condition check

Answer 8

else if statement

Question 9

OR logic symbol

Answer 9

||

Question 10

Write the general If Statement structure

Answer 10

if(somecomparisonconditionistrue){
//run the code within the squiggly brackets
}

Question 11

Function of “else if” Statement

Answer 11

an optional alternate condition check:

checks the statement/condition following the else if when the above if and/or else if statements are false

runs the code within the { } if true

Question 12

String Logic Comparison symbols

Answer 12

.equals()
.equalsIgnoreCase()
.length()

Question 13

Write a program that will let you enter 3 sides of a triangle. If each of the three sides is less than half the perimeter, then a triangle can be formed (e.g., 2, 3, 1000 cannot form a triangle). If a triangle can be formed, find the area of the triangle using Heron’s Formula. If no triangle can be formed, say: ‘Error, can’t make a triangle’.

Question 14

Write an example of a subString

Answer 14

strVariable = strWord.substring(0,2);

// code takes the first 2 letters of the word in the variable “strWord”

Question 15

The students of your class are to be subdivided into 3 teams according to their first name. Names starting with A-I belong to team 1, Names starting with J-P belong to team 2, and Names starting with Q-Z belong to team 3. Write a program that lets you enter a name and place the person on a team. Ex: Moe belongs to team 2.

Question 16

&&

Answer 16

AND logic symbol

Question 17

Write an example of a CPU Logic Command

Answer 17

if(intVariable > #){
con.print(“Example”);
}

Question 18

Function of Else Statement

Answer 18

Optional default statement if all above conditions are false

runs the code within the { }