Add 1st Challenge

Author: Josie-N

JS_Basic_Challenges/1st-Challenge.js

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+/*
+
+Level: Beginner
+
+CODING CHALLENGE 1
+
+
+/*
+
+Mark and John are trying to compare their BMI (Body Mass Index), 
+which is calculated using the formula: BMI = mass / height^2 = mass / (height * height). 
+(mass in kg and height in meter).
+
+1. Store Mark's and John's mass and height in variables
+2. Calculate both their BMIs
+3. Create a boolean variable containing information about whether Mark has a higher BMI than John.
+4. Print a string to the console containing the variable from step 3. 
+(Something like "Is Mark's BMI higher than John's? true"). 
+
+
+SOLUTION 👇🏼 
+
+*/
+
+
+
+
+
+
+
+
+// With comments: 
+
+// Store variables for Mark
+
+var markMass = 68;   // kg
+var markHeight = 1.78;   // cm
+
+// Calculate the BMI
+var markBMI = markMass / (markHeight * markHeight);
+
+// Show Marks final BMI in console
+console.log(Math.round(markBMI));
+
+// Store variables for John
+
+var johnMass = 102;  // kg
+var johnHeight = 1.88;  // cm
+
+var johnBMI = johnMass / (johnHeight * johnHeight);
+
+// Show John's final BMI in console
+console.log(Math.round(johnBMI));
+
+// Who's BMI is higher?
+var higherBMI = markMass > johnMass;
+
+// Print final result (higher BMI)
+var resultMessage = 'Is Mark\'s BMI higher than John\'s?' + ' ' + higherBMI;
+console.log(resultMessage);
+
+
+
+/* ------------------------------------ */
+
+// Without comments: 
+
+
+var markMass = 68;  // kg's
+var markHeight = 1.78;  // cm's
+
+var markBMI = markMass / (markHeight * markHeight);
+
+console.log(Math.round(markBMI));
+
+
+var johnMass = 102; 
+var johnHeight = 1.88;  
+
+var johnBMI = johnMass / (johnHeight * johnHeight);
+
+console.log(Math.round(johnBMI));
+
+
+var higherBMI = markMass > johnMass;
+
+var resultMessage = 'Is Mark\'s BMI higher than John\'s?' + ' ' + higherBMI;
+
+console.log(resultMessage);