Please help answer number 2,3,4.

courses/electrical engineering-and-co 096-introduction-to-cjanuary iap-2011/assis computer-science/6 Hints: Did your program compile? If so, what does it print? If not, what error message do you get? 2. Below is a sample program. Use it to answer the following question: What happens if we declare an identifier in a block and then redeclare that same identifier in a block nested within that block? 1 include Kiostream 3 using namespace std 5 int main 6 7 int arg1; 8 arg1 -1; char arg1 'A' cout arg1 "In" return 0; 14 Hints: Did your program compile? If it does, what does the program output? If not, what error message does it produce? 3. Below is a sample program. Use it to answer the following question: Suppose an