Question 4 [Total: 20 Marks] Consider the following C-program that fails to compile due to syntax errors. Identify the errors and correct the program so that it compiles successfully. What will be the output when the program is executed successfully? 19 Marks 1. #include 2. #include 3. void function Q40; 4. X, y = 5; 5. 6. int main() 7. { 8. function (); 9. function (): 10. function (: return 0; 12. 3 13. function 040 14. 15. int x = 1; 16. static int y = 100;} 17. printf("x =1n", x); 18. printf("y= ", y): UFMFN7-15-1 (C Programming) 11. Page 4 of 6 19. 20. 21. x++; y++ } (b) (c) Consider the C-program in Q4(a), Explain the purpose of the keyword static. [3 Marks) Consider the C-program in Q4(a), identify the global and local variables. What is the importance of global variables in a C-program? [3 Marks) PMAKS (d) Consider the following C fragment: if(a =5) { printf("a is 5 "); } else if (a 4) { printf("a is 4 "); } else { printf("a is unknown "); } Re-write this fragment using a switch statement 15 Marks