Write a program that takes two strings and displays, without duplicates, the characters that appear in both strings, in the order they appear in the second string.

• The program expects exactly two arguments.
• Iterate through the second string and, for each character, output it once if it also exists in the first string.
• Each character is displayed at most once across the entire output (no duplicates).
• End the output with a newline.
• If the program does not receive exactly two arguments (argc must be 3), print wrong number of arguments followed by a newline.

Write a program that takes two strings and displays, without duplicates, the characters that appear in both strings, in the order they appear in the second string.

• The program expects exactly two arguments.
• Iterate through the second string and, for each character, output it once if it also exists in the first string.
• Each character is displayed at most once across the entire output (no duplicates).
• End the output with a newline.
• If the program does not receive exactly two arguments (argc must be 3), print wrong number of arguments followed by a newline.