Question

Write an expression that will cause the following code to print "Equal" if the value of sensorReading is "close enough" to targetValue. Otherwise, print "Not equal".

Answer 1

Answer:

The program to this question as follows:

Program:

targetValue = 0.3333 #defining variable targetValue and assign value

sensorReading = 0.0 #defining variable sensorReading and assign value

sensorReading = 1.0/3.0 #calculate value in sensorReading variable

Val=sensorReading - targetValue

#calculate the difference and store in Val variable

if (Val < 0.0001): #use of if block to check condition

  print ("Equal")  #print value

else:  #else block

  print ("Not equal") #print value

Output:

Equal

Explanation:

In the above Python program code, there are two variables "targetValue and sensorReading" is defined, in which targetValue store a value, that is "0.3333", and sensorReading holds a value, that is "0.0".

• In the next step, the "Val" variable is defined, that calculate the difference between both variable, that conditional statement is used.
• In if block, if the value is less then "0.0001", it will print value "Equal", otherwise, it will go to the else block, that will print "Not equal".

Answer 2

Full Question

Write an expression that will cause the following code to print "Equal" if the value of sensorReading is "close enough" to targetValue. Otherwise, print "Not equal". Ex: If targetValue is 0.3333 and sensorReading is (1.0/3.0), output is: Equal

#include <iostream>

#include <cmath>

using namespace std;

int main() {

double targetValue;

double sensorReading;

cin >> targetValue;

cin >> sensorReading;

if (/* Your solution goes here */) {

cout << "Equal" << endl;

} else {

cout << "Not equal" << endl;

} return 0;

}

Answer:

if (abs(targetValue - sensorReading) <= 0.0001)

Explanation:

Replace

if (/* Your solution goes here */) {

With

if (abs(targetValue - sensorReading) <= 0.0001)

Two values are considered to be close enough if the difference between the values is 0.0001

Splitting the codes into bits;

abs

targetValue - sensorReading

<=

0.0001

The keyword abs is to return the absolute value of the expression in bracket.

This is needed because the expression in the bracket is expected to return a positive value.

To do this the absolute keyword is required.

targetValue - sensorReading returns the difference between the variables

<= compares if the difference falls within range that should be considered to be close enough

0.0001 is the expected range