Problem Set: Logic
This section contains a number of selected problems for the Logic section.
It is recommended that you review the problems, and complete a few before moving on to the next section.
Problem #1: This or That
Identify the output of the following snippet when ||variables:bool||
is
||logic:true||
||logic:false||
if (bool) {
console.log("This");
} else {
console.log("That");
}
Problem #2: Boolean logic
Determine whether the following expressions evaluate to ||logic:true||
or ||logic:false||
.
Problem | Expression | Result |
---|---|---|
(a) | true || false |
|
(b) | true || true |
|
(c) | false && true |
|
(d) | false && false |
|
(e) | true && !true |
|
(f) | !false || !true |
|
(g) | !false || true |
Problem #3: Mysterious Logging
Fill in the table below for the output of the following code based on the initial values
of ||variables:bool1||
and ||variables:bool2||
.
If multiple values are logged, use a slash /
to separate the different lines.
The case where ||variables:bool1||
and ||variables:bool2||
are both
||logic:true||
is filled in as an example.
bool1 == true |
bool1 == false |
|
---|---|---|
bool2 == true |
2 / 3 |
|
bool2 == false |
if (bool1 && 10 > 4) {
if (!bool2) {
console.log("1");
} else {
console.log("2");
}
console.log("3");
} else {
if (6 > 8) {
console.log("4");
} else {
console.log("5");
}
}
Problem #4: Rain or Shine
Translate the following statements into a program that ||game:splashes||
a clothing choice.
Use a number variable ||variables:temp||
for the temperature and a boolean variable
||variables:isRaining||
for whether or not it is raining.
If the temperature is less than 30 degrees, then I wear my winter coat. Otherwise, if it is raining, I wear my rain jacket. In all other cases, I’ll just wear a sweatshirt.
Problem #5: Implication
Create a boolean expression that generates the following results given
boolean variables ||variables:a||
and ||variables:b||
.
a |
b |
Result |
---|---|---|
true |
true |
true |
true |
false |
false |
false |
true |
true |
false |
false |
true |