please check this out ,why is it not working ,

Question

def sum (a,b):
add = (a+b)
print ('sum of ' ,a , 'and ' ,b , 'is equal to ' , add)
print ("thank you")

def substract (a,b):
diff = (a-b)
print ("substraction of ", a , "and ", b , "is equal to " ,diff)
print ("thank you")

def multiply (a,b):
mul = (a*b)
print ('multiplication of ' ,a , 'and ' ,b , 'is equal to ' , mul)
print ("thank you")

def divide (a,b):
div = (a/b)
print (a , 'divided by ',b , 'is equal to ' , div)
print ("thank you")

comm = input("what do you want to do : ")
if comm ==("add"):
add (input("write your no. : "),input("write your second no. : "))

Answer 1

Add your code link.

Answer 2

EDIT: Sorry, didn't see the main error. There is no function add(). The name of the function is sum().

In the last line, you are taking the input as string. So suppose I enter the numbers 5 and 6. They will be taken as strings "5" and "6" and passed to the sum() function, which will print "5" + "6", which is "56".

You need to convert the input to integer. Use the int() function to do that. So the last line would be
`sum(int(input(....)), int(input(...)))`