@emfril Welcome!
MasterGy's tip addresses the #1 problem for old QB fans experiencing QB64 for first time, so i am repeating it. You must click the "Output EXE to source folder" so that there is a bullet next to that option whenever you click the Run menu in the IDE. This puts the compiled .exe program in the same folder as your .bas and that should be same folder as your project files for that .bas source.
Steve's idea is good too, with an extra line or 2, you can choose from a multitude of files to run in your program!
MasterGy's tip addresses the #1 problem for old QB fans experiencing QB64 for first time, so i am repeating it. You must click the "Output EXE to source folder" so that there is a bullet next to that option whenever you click the Run menu in the IDE. This puts the compiled .exe program in the same folder as your .bas and that should be same folder as your project files for that .bas source.
Steve's idea is good too, with an extra line or 2, you can choose from a multitude of files to run in your program!
b = b + ...