Create calculator.py

Author: hemangsk

Codes/calculator.py

@@ -0,0 +1,39 @@
+def add(a, b):
+    return a + b
+    #Evaluates a + b and returns the INTEGER result back to the point where this function was called from.
+
+def sub(a, b):
+    return a - b
+
+def mult(a, b):
+    return a * b
+
+def div(a, b):
+    return a / b
+
+def remainder(a,b):
+    return a % b
+
+print(" ** CALCULATOR ** ")
+print("Enter two numbers")
+a = input()
+b = input()
+
+#Suppose user enters 3 and 5, Then a = "3", b = "5", "3" and "5" are strings
+#But we need a = 3, and not "3" and b = 5, and not "5", so it becomes integers and we can perform arithmetic operations.
+
+a = int(a) # This line converts whatever is stored in a to INTEGER Type and assigns that value to a.
+b = int(b) # This line converts whatever is stored in b to INTEGER Type and assigns that value to b again.
+
+#SO simply put, int function converts variables to INTEGER data type
+# And similiarly, there is an str() function which converts variables to STRING data type
+
+print("\n\nResults!")
+
+# Suppose I entered a=1, b=2 then this happens,
+
+print(add(a,b))     #Addition, add(a,b) becomes --> 3, 3 gets printed on screen.
+print(sub(a,b))     #Subtraction, sub(a,b) --> -1
+print(div(a,b))     #Division, div(a,b) --> 0
+print(mult(a,b))    #Multiplication, mult(a,b) -> 2
+print(remainder(a,b))   #Remainder, remainder(a,b) -> 1