- Our body works on the mechanism of "DNA RNA Proteins Functions". - Rules of DNA RNA Transcription: - AUTAGCCG - Write a program to let users enter a DNA sequence, then output the transcription result as RNA for that DNA sequence. Requirements - Ask users to enter a sequence of DNA (lpt). - The DNA symbols should be case insensitive (lpt). - For legal symbols of DNA, print out the transcribing result for RNA (3pt). - For illegal symbols of DNA, print the error message (2pt). Steps as Hints - Ask users to enter a DNA sequence using the "cin >> DNA" statement. - Transform all characters into upper or lower cases by the transform() function. - Iterate each character of the DNA sequence entered by users. - Once illegal characters were found, terminate the loop by break command. - Print the RNA transcribing result or the error message depending on the symbols of DNA were legal or not