added 3 mre problem solved result

Author: shihabuddin-dev

B. Condition/bmi-calc.js

@@ -0,0 +1,33 @@
+/* problem-2
+
+BMI Calculator and Health Category
+
+Create a JavaScript program that calculates the Body Mass Index (BMI) and assigns a health category based on the BMI value. Use nested if-else statements to determine the health category.
+
+    - Calculate BMI using the formula: BMI = weight (kg) / (height (m))^2
+    - BMI < 18.5, you are underweight.
+    - BMI >= 18.5 and BMI <=24.9, you are normal.
+    - BMI >=25 and BMI <= 29.9, you are overweight.
+    - Otherwise, you are obese.
+
+*/
+let weight = 60;
+let height = 1.5;
+let bmi = ((weight / (height * height)).toFixed(2));
+// console.log(bmi);
+if (bmi < 18.5) {
+    console.log(" You are underweight");
+
+}
+else {
+    if (bmi >= 18.5 && bmi <= 24.9) {
+        console.log("you are normal.");
+    }
+    else if (bmi >= 25 && bmi <= 29.9)
+        console.log("you are overweight.");
+    else {
+        console.log("you are obese.");
+    }
+}
+
+

B. Condition/drinks.js

@@ -0,0 +1,14 @@
+/* problem-1
+
+Free Drinks
+    - Burger more than 500tk: free Coke
+    - Else Coke: 30tk
+*/
+let burgerPrice = 550;
+let coke = 30;
+if (burgerPrice > 500) {
+    console.log("You Will able to get a free coke");
+}
+else {
+    console.log("You have to buy coke");
+}

B. Condition/grade-calc.js

@@ -0,0 +1,74 @@
+/* problem-3
+
+Grade Calculator
+
+Create a simple JavaScript program that takes a student's score as input and returns their corresponding grade based on the following grading scale:
+
+    A+: 80-100
+    A: 70-79
+    B: 60-69
+    C: 50-59
+    D: 40-49
+    E: 33-39
+    F: 0-32
+
+*/
+let marks = 100;
+// normal solution 
+if (marks >= 80 && marks <= 100) {
+    console.log("You Got A+");
+}
+else if (marks >= 70 && marks <= 79) {
+    console.log("You Got A");
+}
+else if (marks >= 60 && marks <= 69) {
+    console.log("You Got B");
+}
+else if (marks >= 50 && marks <= 59) {
+    console.log("You Got C");
+}
+else if (marks >= 40 && marks <= 49) {
+    console.log("You Got D");
+}
+else if (marks >= 33 && marks <= 39) {
+    console.log("You Got E");
+}
+else if (marks > 100) {
+    console.log("Invalid Marks");
+}
+else {
+    console.log("You Have Failed in the Exam");
+}
+
+
+// solution by Nested
+if (marks >= 80 && marks <= 100) {
+    console.log("You Got A+");
+}
+else {
+    if (marks >= 70 && marks <= 79) {
+        console.log("You Got A");
+    }
+    else if (marks >= 60 && marks <= 69) {
+        console.log("You Got B");
+    }
+    else if (marks >= 50 && marks <= 59) {
+        console.log("You Got C");
+    }
+    else if (marks >= 40 && marks <= 49) {
+        console.log("You Got D");
+    }
+    else if (marks >= 33 && marks <= 39) {
+        console.log("You Got E");
+    }
+    else if (marks > 100) {
+        console.log("Invalid Marks");
+    }
+    else {
+        console.log("You Have Failed in the Exam");
+    }
+
+}
+// ternary solution 
+let result = marks >= 80 && marks <= 100 ? "You Got A+" : marks >= 70 && marks <= 79 ? "You Got A" : marks >= 60 && marks <= 69 ? "You Got B" : marks >= 50 && marks <= 59 ? "You Got C" : marks >= 40 && marks <= 49 ? "You Got D" : marks >= 33 && marks <= 39 ? "You Got E" : marks > 100 ? "Invalid Marks" : "You Have Failed in the Exam";
+console.log(result);