Solution

Solution

Functions can have default parameter values, which are used if no argument is provided during the function call.

def greet(name="Student"):
    return "Hello, " + name + "!"

print(greet())           # Output: Hello, Student!
print(greet("Umer"))     # Output: Hello, Umer!

If greet() is called with no argument, name takes the default value "Student". If an argument is given, that value is used instead.