coursework

Author: risikatpopoola

Sprint-2/1-key-errors/0.js

@@ -1,13 +1,16 @@
 // Predict and explain first...
-//  =============> write your prediction here
-
-// call the function capitalise with a string input
+//  =============> We use a string template when we want to join different character sets together but by casing the first letter
+// to uppercase we're assuming that it is formed of letters
 // interpret the error message and figure out why an error is occurring
 
 function capitalise(str) {
   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
 
-// =============> write your explanation here
-// =============> write your new code here
+// he error message says 'str' has already been declared so we can use another name for our 
+//output to solve that error we change the output variable name
+// function capitalise(str) {
+ // let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+ // return str;
+//}

Sprint-2/1-key-errors/1.js

@@ -1,7 +1,8 @@
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// =============> write your prediction here
+// The parameter is a constant which means the program will output the same thing everytime, 
+//and would give an error message saying it has been declared if run.
 
 // Try playing computer with the example to work out what is going on
 
@@ -10,11 +11,18 @@ function convertToPercentage(decimalNumber) {
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
+
+  console.log(decimalNumber);
 }
+// =============> Our parameter has already been declared which is why the program is resulting in an error
 
-console.log(decimalNumber);
+// Finally, correct the code to fix the problem
+// function convertToPercentage(decimalNumber) {
+ // const decimalNumber1 = 0.5;
+  //const percentage = `${decimalNumber1 * 100}%`;
 
-// =============> write your explanation here
+ // return percentage;
+ //  console.log(decimalNumber1);
+//}
 
-// Finally, correct the code to fix the problem
-// =============> write your new code here
+//

Sprint-2/1-key-errors/2.js

@@ -1,20 +1,25 @@
 
 // Predict and explain first BEFORE you run any code...
-
+//We are going to get an error because an integer cannot be a parameter, it has to be a variable.
 // this function should square any number but instead we're going to get an error
 
 // =============> write your prediction of the error here
+//syntaxERror, identifier cannot be an integer
 
 function square(3) {
     return num * num;
 }
 
 // =============> write the error message here
+// Uncaught SyntaxError SyntaxError: Unexpected number
 
 // =============> explain this error message here
-
+//The program was expecting a function parameter but got a number instead
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
+//function square(num) {
+ //   return num * num;
+//}
 
 

Sprint-2/2-mandatory-debug/0.js

@@ -1,7 +1,8 @@
 // Predict and explain first...
 
 // =============> write your prediction here
-
+//This won't work because we are not returning anything.
+  
 function multiply(a, b) {
   console.log(a * b);
 }
@@ -11,4 +12,9 @@ console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 // =============> write your explanation here
 
 // Finally, correct the code to fix the problem
+//function multiply(a, b) {
+//return a * b;
+//}
+
+//console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 //  =============> write your new code here

Sprint-2/2-mandatory-debug/1.js

@@ -1,5 +1,6 @@
 // Predict and explain first...
 //  =============> write your prediction here
+//This won't work because of a  syntax error, return a+b should be on a single line and not on separate lines
 
 function sum(a, b) {
   return;
@@ -9,5 +10,11 @@ function sum(a, b) {
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
 // =============> write your explanation here
+// The sum of a + b is undefined because we are not returning any value
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+//function sum(a, b) {
+ // return a + b;
+//}
+
+//console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);

Sprint-2/2-mandatory-debug/2.js

@@ -1,7 +1,8 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> Write your prediction here
+// =============> Write your prediction 
+//It should output string cannot be accessed because we are using normal brackets instead of square brackets
 
 const num = 103;
 
@@ -14,11 +15,20 @@ console.log(`The last digit of 105 is ${getLastDigit(105)}`);
 console.log(`The last digit of 806 is ${getLastDigit(806)}`);
 
 // Now run the code and compare the output to your prediction
-// =============> write the output here
+// =============>The output was 3 for all instead of the last digit of each number.
+//
 // Explain why the output is the way it is
-// =============> write your explanation here
+// =============> This is because we already declared the num variable as a constant
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// =============> write your new code here 
 
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem
+//There was no parameter so the function wasn't running properly.
+//function getLastDigit(num) {
+ // return num.toString().slice(-1);
+//}
+
+//console.log(`The last digit of 42 is ${getLastDigit(42)}`);
+//console.log(`The last digit of 105 is ${getLastDigit(105)}`);
+//console.log(`The last digit of 806 is ${getLastDigit(806)}`);

Sprint-2/3-mandatory-implement/1-bmi.js

@@ -15,5 +15,8 @@
 // It should return their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
+    let bmi = weight / height*height;
+    return bmi;
     // return the BMI of someone based off their weight and height
-}
+}
+console.log(`Your BMI is ${bmi}`)