Update areatriangle.py

Python-programming-1/areatriangle.py

@@ -1,7 +1,23 @@
-# Python Program to find the area of triangle
-a = float(input("Enter first side:"))
-b = float(input("Enter second side:"))
-c = float(input("Enter third side:"))
-s = (a + b + c) / 2
-area = (s*(s-a)*(s-b)*(s-c)) ** 0.5
-print("Area of triangle is :",area)
+# Python Program to find the area of a triangle using Heron's formula
+
+# Function to check if three sides can form a triangle
+def is_valid_triangle(a, b, c):
+    return (a + b > c) and (a + c > b) and (b + c > a)
+
+# Input for the sides of the triangle
+a = float(input("Enter first side: "))
+b = float(input("Enter second side: "))
+c = float(input("Enter third side: "))
+
+# Check if the sides can form a valid triangle
+if is_valid_triangle(a, b, c):
+    # Calculate semi-perimeter
+    s = (a + b + c) / 2
+
+    # Calculate area using Heron's formula
+    area = (s * (s - a) * (s - b) * (s - c)) ** 0.5
+
+    print("Area of triangle is:", area)
+else:
+    print("Invalid triangle sides. Please ensure that the sum of any two sides is greater than the third side.")
+