add num as a parameter to function

Author: shirinpanahian

Sprint-3/2-mandatory-debug/2.js

@@ -1,24 +1,39 @@
 // Predict and explain first...
+// In my idea we can not change value of num as it is defined by const
 
 // Predict the output of the following code:
 // =============> Write your prediction here
+//perhaps we will get value definition error
 
-const num = 103;
+/*const num = 103;
 
 function getLastDigit() {
   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)}`);
+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 last digit of 42 is 3
+//The last digit of 105 is 3
+//The last digit of 806 is 3
+
 // Explain why the output is the way it is
-// =============> write your explanation here
+// I was wrong in all the function call, the result is the same because the function always uses the global num.
+
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+let num = 103;
+
+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)}`);
 
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem