ITP JAN|saraamiri|Module-structuring-and-testing-data |sprint 2

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

@@ -5,9 +5,15 @@
 // interpret the error message and figure out why an error is occurring
 
 function capitalise(str) {
-  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+ let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
 
 // =============> write your explanation here
+//we recieve an syntax error beacuse we use str as parameter and then use as variable we can not do the same in js 
 // =============> write your new code here
+//to fix this i remove the let ,dont need to declare new variable str 
+function capitalise(str) {
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}

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

@@ -18,3 +18,10 @@ console.log(decimalNumber);
 
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+//we need to remove redeclaration of decimal number inside the function 
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+  return percentage;
+}
+
+console.log(convertToPercentage(0.5));

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

@@ -5,16 +5,19 @@
 
 // =============> write your prediction of the error here
 
-function square(3) {
-    return num * num;
-}
+//function square(3) {
+//    return num * num;
+//}
 
 // =============> write the error message here
+//SyntaxError: Unexpected number
 
 // =============> explain this error message here
-
+//we need to define the parameter in the function as num 
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
-
-
+function square(num) {
+    return num * num;
+}
+console.log(square(3));

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

@@ -9,6 +9,13 @@ function multiply(a, b) {
 console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 
 // =============> write your explanation here
-
+//the problem is multiply function dose not return anything 
 // Finally, correct the code to fix the problem
+
+
 //  =============> write your new code here
+function multiply(a, b) {
+  return(a * b);
+}
+
+console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);

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

@@ -9,5 +9,11 @@ function sum(a, b) {
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
 // =============> write your explanation here
+//return and a+b in 2 seprate line,he line a + b; is effectively unreachable and will not be executed. 
 // 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

@@ -22,3 +22,10 @@ console.log(`The last digit of 806 is ${getLastDigit(806)}`);
 
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem
+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 +15,16 @@
 // It should return their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
+
+
     // return the BMI of someone based off their weight and height
-}
+
+        // Step 1: Square the height
+        const heightSquared = height * height;
+
+        // Step 2: Divide weight by the squared height to calculate BMI
+        const bmi = weight / heightSquared;
+
+        // Step 3: Return the BMI rounded to 1 decimal place
+        return bmi.toFixed(1);
+}

Sprint-2/3-mandatory-implement/2-cases.js

@@ -14,3 +14,10 @@
 // You will need to come up with an appropriate name for the function
 // Use the MDN string documentation to help you find a solution
 // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+function toUpperSnakeCase(str) {
+    // Split the string into words, convert each word to uppercase, and join them with underscores
+    return str.split(' ').map(word => word.toUpperCase()).join('_');
+}
+
+console.log(toUpperSnakeCase("hello there")); // Output: "HELLO_THERE"
+console.log(toUpperSnakeCase("lord of the rings")); // Output: "LORD_OF_THE_RINGS"

Sprint-2/3-mandatory-implement/3-to-pounds.js

@@ -4,3 +4,29 @@
 // You will need to declare a function called toPounds with an appropriately named parameter.
 
 // You should call this function a number of times to check it works for different inputs
+// Function to convert pence string to pounds
+function toPounds(penceString) {
+    // Remove the trailing "p" from the input string
+    const penceStringWithoutTrailingP = penceString.substring(0, penceString.length - 1);
+
+    // Pad the number to ensure it's at least 3 digits
+    const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+
+    // Extract the pounds (first part of the string)
+    const pounds = paddedPenceNumberString.substring(0, paddedPenceNumberString.length - 2);
+
+    // Extract the pence (last two digits), ensuring it's two digits
+    const pence = paddedPenceNumberString
+      .substring(paddedPenceNumberString.length - 2)
+      .padEnd(2, "0");
+
+    // Return the formatted result
+    return `£${pounds}.${pence}`;
+  }
+
+  // Test the function with different inputs
+  console.log(toPounds("399p")); // Expected output: £3.99
+  console.log(toPounds("100p")); // Expected output: £1.00
+  console.log(toPounds("25p"));  // Expected output: £0.25
+  console.log(toPounds("500p")); // Expected output: £5.00
+

Sprint-2/4-mandatory-interpret/time-format.js

@@ -17,18 +17,20 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here
+// =============> write your answer here three times 
 
 // Call formatTimeDisplay with an input of 61, now answer the following:
 
 // b) What is the value assigned to num when pad is called for the first time?
 // =============> write your answer here
-
+//zero 
 // c) What is the return value of pad is called for the first time?
 // =============> write your answer here
+//num is zero and pad will  be "00" 
 
 // d) What is the value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+// =============> write your answer here is call for remaining second will be 1
 
 // e) What is the return value assigned to num when pad is called for the last time in this program?  Explain your answer
 // =============> write your answer here
+//The return value assigned to num when pad is called for the last time will be "01", because pad(1) will return "01"