Q4. Write a MIPS program that reads from the keyboard a string of no more than 20 characters and then outputs the string in a single line even if the input is written on multiple lines. The input string will be terminated by an character '0', which doesn't count as part of the string. Hint: use a loop to read the input character-by-character and save all characters in a memory buffer. (10 marks) Sample runs (green text is the output) abc def ghio abcdefghi Example of terminating input with 0 abcdef ghijklm nopq abcdefghijklmnopq Example of reaching maximum number of acharacters (20)