Diff Tool

Have a problem after typing in the source code from the book, but can't understand the error message? Just select which program you were typing from the dropdown list and copy and paste your code into the text field.

Click "Compare" to see a comparison of the source code as it is in the book and your program, and any differences between them will be highlighted.

Program: Side by Side    Inline

Copy and paste your code here to see how it is different from the code in the book: