computer architecture

3. Modify your program above so the input string can contain both UPPER and lower case letters and punctuation like commas or spaces. The program should pass any character which is not an upper or lower case letter through unchanged. (Example: Input: Ta,ble T Output: tA,BL:Et) 4. Modify your program (above) so the output will be the reverse case and also the reverse order. Plus implementing the following alphabet conversion: Original | A | B | C | D | E Converte G HIJK where the alphabets are shifted 6 letters down (Example: Inputting AbC_DeF, outputting: IKj iHg