C program A decimal number between 0 and 32 exclusive can be expressed in binary system as x4x3x2x1x0, where  xi ’s are either zero or one. Write a C program that accepts (from the terminal) a decimal number in the  above range and prints out the equivalent binary representatio

Programming language: Dr. Racket Write a function encode that consumes a string message. The function produces a string which is encrypted according the following procedure: Only the letters from the original message will be encrypted. Other characters such as spaces, punctuation, numeric digits, etc. are not included in the encrypted message at all. The encrypted message will only contain uppercase letters. Each letter will be replaced by the uppercase letter at the opposite end of the English alphabet.In other words, A or a will become Z, B or b will become Y, C or c will become X, ..., Z or z will become A. The encrypted message will have a single space separating each letter. You may assume that the letters in message are English letters only.   For example:  > (encode "Cat") "X Z G" > (encode "Is this correct?")  "R H G S R H X L I I V X G"