What is the difference between this 2 python calculations

Question

Question 1

a = input("a="). .... value entered 5

b = input("b="). .... value entered 6

c = int(a+b)

print (c)

answer was 56

I EXPECTED 11

QUESTION 2.

a = input("a="). .... value entered 5

b = input("b="). .... value entered 6

c = int(a) + int(b)

print (c)

answer was 11 which is what I expected

why are the answers different?

Answer 1

thanks guys

Answer 2

So invariably... the '+' simply place the 2 figures next to each other?

Answer 3

Input returns string ,so in first 5 was "5" and 6 was "6" so adding two strings will give 56 and in second method you converted string type to int so it was 11