Area and Perimeter of the Circle - Classes Practice Problems

Author: iamnishantchandra

10X/Python/Class/Area_Perimeter_circle.py

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+'''
+Area and Perimeter of the Circle - Classes Practice Problems
+Design a class with has 2 methods. One which calculates area of the circle and one which calculates the 
+circumference of a circle given the radius r. Please use the pi value as 3.14. For any infeasible radius 
+r, please return the area and circumference as 0.0
+
+Your class should be named Circle. Method to get area should be named getArea. Method to get 
+circumference should be named getCircumference.
+
+Input
+One line containing a floating point number denoting the radius r.
+
+Output
+2 lines containing floating point numbers. First one containing the area of the circle. second line 
+containing the circumference of the circle.
+
+Example
+Input:
+
+5
+Output:
+
+78.5
+31.4
+First line in input is radius r which is 5. Area is 5*5*3.14 which is 78.5 which is the first line of the 
+output. Circumference is 2*3.14*5 which is 31.4 which is the second line of the output.
+
+'''
+
+# Your class should be named `Circle`.
+# Method to get area should be named `getArea`
+# Method to get circumference should be named `getCircumference`.
+# Your class should take radius `r` as input when creating an object.
+class Circle:
+    def __init__(self,r):
+            self.r=r
+    def getArea(self):
+        if self.r>0:
+        	return 3.14*((self.r)**2)
+        else:
+        	return 0
+    def getCircumference(self):
+        if self.r>0:
+        	return 2*(3.14*self.r)
+        else:
+        	return 0
+if __name__ == "__main__":
+    one_circle = Circle(float(input()))
+    print(float(one_circle.getArea()))
+    print(float(one_circle.getCircumference()))