Question

Create a program that calculates the Body Mass Index (BMI) for a user.

The program should ask the user for their weight (in kilograms) and height (in meters).
It should calculate BMI using the formula: BMI= wt / ht**2​
wtThe program should then determine and print whether the user is:
"Underweight" (BMI < 18.5)
"Normal weight" (BMI 18.5–24.9)
"Overweight" (BMI 25–29.9)
"Obese" (BMI ≥ 30)
Create the program as using python

Answer 1

Here's a Python program that calculates the Body Mass Index (BMI) for a user and categorizes it based on the BMI value:

```python
def calculate_bmi(weight, height):
return weight / (height ** 2)

def classify_bmi(bmi):
if bmi < 18.5:
return "Underweight"
elif 18.5 <= bmi < 25:
return "Normal weight"
elif 25 <= bmi < 30:
return "Overweight"
else:
return "Obese"

def main():
print("Welcome to the BMI Calculator!")

# Get user input for weight and height
try:
weight = float(input("Please enter your weight (in kg): "))
height = float(input("Please enter your height (in meters): "))

if weight <= 0 or height <= 0:
print("Weight and height must be positive numbers.")
return

# Calculate BMI
bmi = calculate_bmi(weight, height)

# Print the result
print(f"Your BMI is: {bmi:.2f}")
classification = classify_bmi(bmi)
print(f"You are classified as: {classification}")

except ValueError:
print("Invalid input. Please enter numeric values for weight and height.")

if __name__ == "__main__":
main()
```

### How to Use the Program
1. Copy the code into a Python environment (such as an IDE or a Jupyter notebook).
2. Run the program.
3. Input your weight in kilograms and height in meters when prompted.
4. The program will calculate your BMI and classify your weight status.

### Additional Notes
- The program includes basic error handling to ensure that the user inputs valid numeric values for weight and height.
- It checks to make sure that both weight and height are positive numbers before performing calculations.