adding compound interest

Signed-off-by: Upkar Lidder <[email protected]>

compound_interest.py

@@ -0,0 +1,24 @@
+# This script calculates yearly compound interest given principal, annual rate of interest and time period in years.
+# Do not use this in production. Sample purpose only.
+
+# Author: Upkar Lidder (IBM)
+
+# Input:
+# p, principal amount
+# t, time period in years
+# r, annual rate of interest
+
+# Output:
+# compound interest = p * (1 + r/100)^t
+
+
+def compound_interest(p, t, r):
+    return p * (pow((1 + r / 100), t))
+
+
+if __name__ == "__main__":
+    p = float(input("Enter the principle amount: "))
+    t = float(input("Enter the time period: "))
+    r = float(input("Enter the rate of interest: "))
+
+    print("The compound interest is {:.2f}".format(compound_interest(p, t, r)))