Uniform Resource Identifiers (or URIs) are strings like http://icpc.baylor.edu/icpc/, mailto:firstname.lastname@example.org, ftp://127.0.0.1/pub/linux, or even just readme.txt that are used to identify a resource, usually on the Internet or a local computer. Certain characters are reserved within URIs, and if a reserved character is part of an identifier then it must be percent-encoded by replacing it with a percent sign followed by two hexadecimal digits representing the ASCII code of the character. A table of seven reserved characters and their encodings is shown below. Your job is to write a program that can percent-encode a string of characters.
|" " (space)||%20|
|"!" (exclamation point)||%21|
|"$" (dollar sign)||%24|
|"%" (percent sign)||%25|
|"(" (left parenthesis)||%28|
|")" (right parenthesis)||%29|
Input (from file input4.txt): The input consists of one or more strings, each 1–79 characters long and on a line by itself, followed by a line containing only "#" that signals the end of the input. The character "#" is used only as an end-of-input marker and will not appear anywhere else in the input. A string may contain spaces, but not at the beginning or end of the string, and there will never be two or more consecutive spaces.
Output (to file output4.txt):: For each input string, replace every occurrence of a reserved character in the table above by its percent-encoding, exactly as shown, and output the resulting string on a line by itself. Note that the percent-encoding for an asterisk is %2a (with a lowercase "a") rather than %2A (with an uppercase "A").
|Example input:||Example output:|
|Happy Joy Joy!
the 7% solution