Task #$1-(50$ points$)$

encrypted message exists.

Requirements

Name your program project$5\_$decrypt.c$.$

Assume the input length for the string is no more than $1000$ characters.

Assume the input string contains only lowercase alphabetic letters.

The program should include the following function:

void decrypt$($char $*$input$,$ char $*$output$)$;

The function expects input contain the input string and output stores the decrypted string.

This function should use pointer arithmetic$-$ not subscripting $-$ to visit array elements. In other words, eliminate the loop index variables and all use of the $[]$ operator in the function.

String library functions are NOT allowed.

main function calls the decrypt function and displays the output.

Follow the format of the examples below.

Examples $($your program must follow this format precisely$)$

Example #$1$

Enter message: siisss

Output: sis

Example #$2$

Enter message: teemmmpppp

Output: temp

Example #$3$

Enter message: npp

Output: np Using a $4$X$16$ decoder module and a OR gate to implement the Boolean function f$($a$,$b$,$c$,$d$)=$ abc$+$ a'cd.