# Python | Write a function to find sum of two integral numbers in string format

Here, we are implementing a program in python, in which we will write a function that will accept two integral types of numbers in string format and return sum of the numbers as an integer. By IncludeHelp Last updated : February 25, 2024

## Problem statement

Given two integral numbers in string format, we have to define a function that can receive these numbers, convert into integers and return the sum as integer in Python.

## Example

```Input:
num1 = "10"
num2 = "20"

Function calling:
calculateSum(num1, num2)

Output:
Sum = 30
```

## Logic

• Input two numbers in string format (We are just assigning the hard-coded values here), note that, numbers should be integral type.
• Define a function, pass these values as parameters.
• Explicitly convert the values to integer by using int(variable/value).
• Calculate the sum and return it.

## Program

```# function to calculate and return the sum
# parameters:
# a, b - integral numbers in string format
# return: sum of the numbers in integer format

def calculateSum (a,b):
s = int(a) + int(b)
return s

# Main code
# take two integral numbers as strings
num1 = "10"
num2 = "20"

# calculate sum
sum = calculateSum (num1, num2)

# print sum
print "Sum = ", sum
```

### Output

```Sum =  30
```

To understand the above program, you should have the basic knowledge of the following Python topics: