Adding Distance Calculator (#389)

* Added program

* Delete distance_calculator.py

* Create README.md

* Added program

* Updated README.md with program

* Added example to README.md

* Fixed bugs and added feature

Fixed a bug where negative numbers were not allowed and added quit feature to quit the program

* Fixed floating point bug

Made the calculator compatible with floating(decimal)numbers

* Added better input validation

Distance Calculator/README.md

@@ -0,0 +1,14 @@
+# Program 
+This is a *distance calculator*, used to calculate the distance between two points on a 2D plane.
+
+# How to use
+
+## Use any of the following commands -
+`python distance_calculator.py`
+
+`python3 distance_calculator.py`
+
+## Example
+![image](https://github.com/user-attachments/assets/987537c2-236e-4560-9a06-3de4bbe98f5e)
+
+Made by Mathdallas_code(me)

Distance Calculator/distance_calculator.py

@@ -0,0 +1,71 @@
+# Uses the pythagorean theorem to calculate the distance between two points on a 2D plane.
+# The points are represented as tuples of two numbers.
+# The function should return a float.
+
+# Sample :- startX = 0, startY = 0, endX = 3, endY = 4. 
+# So, according to pythagorean theorem, the distance between these two points is 5.0.
+
+# Hope this helps!
+
+# Importing module(s)
+import math
+
+# Main loop
+while True:
+    use_program=input("Do you want to calculate the distance between two points? (yes/no): ")
+    if use_program.lower() == "yes":
+        pass
+    elif use_program.lower() == "no":
+        print("Thank you for using the distance calculator!")
+        quit()
+    else:
+        print("Invalid input! Please enter 'yes' or 'no'.")
+        continue    
+
+    # Input validation for startX, startY, endX, endY
+
+    # startX
+    while True:
+        startX = input("Enter starting x-coordinate: ")
+        if not startX.isnumeric():
+            print("Error! Input has to be a number!")
+            continue
+        else:
+            break
+
+    # startY
+    while True:
+        startY = input("Enter starting y-coordinate: ")
+        if not startY.isnumeric():
+            print("Error! Input has to be a number!")
+            continue
+        else:
+            break
+
+    # endX
+    while True:
+        endX = input("Enter ending x-coordinate: ")
+        if not endX.isnumeric():
+            print("Error! Input has to be a number!")
+            continue
+        else:
+            break
+
+    # endY    
+    while True:
+        endY = input("Enter ending y-coordinate: ")
+        if not endY.isnumeric():
+            print("Error! Input has to be a number!")
+            continue
+        else:
+            break
+
+    # Converting the values to floats
+    startX = float(startX)
+    startY = float(startY)
+    endX = float(endX)
+    endY = float(endY)
+
+    # The calculation
+    distance = math.sqrt(math.pow(startX - endX, 2) + math.pow(startY - endY, 2))
+    print(f"The distance between ({startX}, {startY}) and ({endX}, {endY}) is {distance} units.")

README.md

@@ -56,6 +56,7 @@ More information on contributing and the general code of conduct for discussion
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