Write a Python function to reverse a string without using any built-in functions or slicing.
def reverse_string(input_string): reversed_string = "" for i in range(len(input_string) - 1, -1, -1): reversed_string += input_string[i] return reversed_string # Test the function my_string = "Hello, World!" reversed = reverse_string(my_string) print(reversed) #output !dlroW ,olleH
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