Objective

Write a program that receives a string, a search character, and a replacement character, then substitutes only the last matching character found in the string.

Steps

• The program expects exactly three arguments after the binary name.
• The second and third arguments must each be exactly one character long.
• If the search character appears in the string, replace only its last occurrence with the replacement character.
• If the search character does not appear in the string, print the string unchanged.
• If the argument count is wrong, print wrong number of arguments followed by a newline. If either character argument is not a single character, print only a newline.
• Always end the output with a newline.

Objective

Write a program that receives a string, a search character, and a replacement character, then substitutes only the last matching character found in the string.

Steps

• The program expects exactly three arguments after the binary name.
• The second and third arguments must each be exactly one character long.
• If the search character appears in the string, replace only its last occurrence with the replacement character.
• If the search character does not appear in the string, print the string unchanged.
• If the argument count is wrong, print wrong number of arguments followed by a newline. If either character argument is not a single character, print only a newline.
• Always end the output with a newline.