Add additional include directories:

In the main function
App App;
App. GetVal ();//call inside a method, error ~

CodePudding user response:

Such mistakes, you need to put the APP. CPP added to your project, just in the code to use "# include" APP. H "" is not enough

CodePudding user response:

reference 1st floor draculamx response:

appear such mistakes, you need to put the APP. CPP added to your project, just in the code to use "# include" APP. H "" is not enough

If the App folder structure is more complex, multi-level directory, all the source files that add too? Still have other method, now a single App. CPP file added no problem