Demonstrate Recursion and Exception handling

Write a small java program to recursively read a file that at first does not exist.

$$ Program exception handling that allows the user to correct the problem.

$$ Track and display the consecutive number of each recursive call $($see example output$).$

$$ When the problem is fixed, thank the user $$ ONLY ONCE.

$$ Track the number of recursive returns, unwinding from the count of the deepest return $($see

example output$).$

Example output:

Failed to open file testData.dat: iostream error

Recursive call count: $1$

Please remedy the situation. Then press enter to continue.

Failed to open file testData.dat: iostream error

Recursive call count: $2$

Please remedy the situation. Then press enter to continue.

Failed to open file testData.dat: iostream error

Recursive call count: $3$

Please remedy the situation. Then press enter to continue.

Failed to open file testData.dat: iostream error

Recursive call count: $4$

Please remedy the situation. Then press enter to continue.

Failed to open file testData.dat: iostream error

Recursive call count: $5$

Please remedy the situation. Then press enter to continue.

Failed to open file testData.dat: iostream error

Recursive call count: $6$

Please remedy the situation. Then press enter to continue.

Failed to open file testData.dat: iostream error

Recursive call count: $7$

Please remedy the situation. Then press enter to continue.

Failed to open file testData.dat: iostream error

Recursive call count: $8$

Please remedy the situation. Then press enter to continue.

Thanks for fixing that.

Recursion return count: $8$

Recursion return count: $7$

Recursion return count: $6$

Recursion return count: $5$

Recursion return count: $4$

Recursion return count: $3$

Recursion return count: $2$

Recursion return count: $1$

This is the content of the file:

Howard, Shemp

Howard, Moe

Fine, Larry

Howard, Curly

Process returned $0(0$x$0)$ execution time : $14\mathrm{.}464$ s

Press any key to continue.

My Solution:

I did this in one file with $3$ functions$/$methods

bool fileOpen$($ifstream inFile, int count$)$ RECURSIVE CALLS TO THIS

inFile is the name of the file to open.

count is the recursion count $$ bump this number for each call to this function$/$method

Returns true if this is the first return. In other words, the last call to this function$/$method$,$

where the user fixes the problem.

The try$/$throw catch exception handling is completely contained in this function$/$method

Recursive call counts are adjusted here.

Use getline$()$ in c$++$ to just $$press enter to continue$.$

The return Boolean value is used to determine when to print the one time message thanking the

user for fixing the problem.

void readDataFile$()$

Initial the count and call fileOpen$().$ When this call returns, any file existence problems will have

been resolved.

Step through all the file records and display them.

Don$$t forget to close the file.

main$()$

Simply call readDataFile.