cannot open output file D:\vsCode\CPP/exe/test1.exe: No such file or directory

This error message indicates that the program is unable to create the output file because the directory specified does not exist or the file cannot be created due to some permission issues.

To resolve this issue, you can try the following steps:

1. Make sure that the directory specified in the output file path exists. If not, create the directory manually.
2. Check if there are any permission issues with the directory or file. Ensure that you have the necessary permissions to create files in the specified directory.
3. If you are using an antivirus program, temporarily disable it and try running the program again. Sometimes, antivirus programs can interfere with the creation of new files.
4. If none of the above steps work, try changing the output file path to a different directory or location.

Once you have resolved the issue, you should be able to create the output file without any errors.