C++ please answer 19-23

19. What is the output of the following code fragment if x is 157 iftx 20) ifix c10) cout ce "less than 10 else cout c "largein" a. less than 10 b. nothing c. large d. no output, syntax error 20. Which of the following symbols has the highest precedence? 21. What is wrong with the following for loop? for(int i-0:ic10;i-) cout 10) x=13; a. 10 b. 9 c. 13 23. How many times is "Hi" printed to the screen fort int i-0;KI 4;i++); cout