How to check whether a path is valid

[d.motta]

Check the box next to the path you feel is correct and leave a response to your answer:

• “C:\\tmp\\ ${filename}.pdf”
• “C:\\tmp\\ “+filename+”.pdf”
• “C:\tmp\”+filename+“.pdf”
• “C:\tmp\${filename}.pdf”
• “C:/tmp/”+filename+“.pdf”
• “C:/tmp/${filename}.pdf”

[d.motta]

The answer to the above questions:

1. “C:/tmp/”+filename+“.pdf”
2. "C:\\tmp\\ “+filename+”.pdf”