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Program 2: To add two numbers using all the three types of user-defined functions.

Program2.py

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#Type 1 Function:
def addl():
a = int(input("Enter the first number: "))
b = int(input("Enter the second number: "))
c = a + b
print("The sum of both the numbers is " + str(c))
#Type 2 Function:
def add2(a, b):
c=a+b
print("The sum of both the numbers is " + str(c))
#Type 3 Function:
def add3(a, b):
c = a + b
return c
print("Calling Type 1 function")
addl()
print("Calling Type 2 function")
add2(12, 16)
print("Calling Type 3 function")
result = add3(20, 30)
print(result)

On running the above program, you will get the following output:

Output

Calling Type 1 function
Enter the first number: 4
Enter the second number: 5
The sum of both the numbers is 9
Calling Type 2 function
The sum of both the numbers is 28
Calling Type 3 function
50

STRING

A sequence of characters which is enclosed or surrounded by single (‘ ’), double (“ ”), or tipple (“‘ ’”)
quotes is known as a string. The sequence may include a letter, number, special characters or a
backslash. Python treats single quotes as double quotes.

94 Computer Science (V5.0)-VIII