Why can’t you test a program for run-time errors when it has compile-time errors?

You can't test a program for run-time errors when it has compile-time errors because the program needs to be successfully compiled before it can be run.

Here are the steps explaining why:

1. When you write a program, the first step is to compile it. The compiler checks the program's syntax and structure to make sure it follows the rules of the programming language. This is when compile-time errors are detected.
2. If there are compile-time errors, the compiler can't successfully convert the source code into executable code. As a result, the program can't be run at all.
3. Because the program can't be run, it's impossible to test it for run-time errors. Run-time errors only occur during the execution of a program, so if the program can't be executed, no run-time errors can occur.
4. To test the program for run-time errors, you first need to fix all the compile-time errors so that the program can be successfully compiled and run.