Use C++ to do hw#4a and 4b to

a. Show with no "test.dat" file

b. Read 1 piece of data from "test.dat" file

Show your full codes please!

Example: testing if file opened successfully HW Problem #4a & #4b: try this without with it! #include kiostream> Il needed for normal cin & cout #include llneeded to read or write files on disk. #include Iwill for exit need using namespace std; Use Notepad to create file of int main numbers & save as test dat 22400 15000 31700-1 int x Path assumed to be in same ifstream infile; directory as your source code infile open("test.dat"); llmust have file setup if (!infile) cout "Unable to open test.dat file"