error: redefinition of class

You should structure your code between .h (headers) and .cpp files (implementation). You should include header files: .h Never include .cpp files. (Unless you know what you do, and that would be in really rare cases). Otherwise you’re ending compiling several times your class, and you get the error your compiler is telling you: ‘redefinition of class…’ An additional … Read more

What does “collect2: error: ld returned 1 exit status” mean?

The ld returned 1 exit status error is the consequence of previous errors. In your example there is an earlier error – undefined reference to ‘clrscr’ – and this is the real one. The exit status error just signals that the linking step in the build process encountered some errors. Normally exit status 0 means success, and exit status > 0 means errors. … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)