Can't run debugger saying, "Unable to start program..."

[leeZico]

I am using Visual Studio Professional 2013 and it won't let me run the debugger after building it successfully.
Whenever I try to debug it, a message pops up that says, "Unable to start program 'C:/users....exe'. The system cannot find the file specified."

I've tried to fix this issue by copying the whole solution and pasting into a new project. But then it will get a same issue. I've tried to do something else by clicking on 'Build Solution' rather than 'Compile', but two errors show up... "Error 1 error LNK2019: unresolved external symbol "double __cdecl getAvg(int (* const)[5],int)" (?getAvg@@YANQAY04HH@Z) referenced in function _main C:\Users\..." and "Error 2 error LNK1120: 1 unresolved externals C:\Users\zicol\Desktop\c programming hw\monkey business\Debug\monkey business.exe monkey business"

How do I fix this kind of problem?
Any suggestions would be appreciated!

[MiiNiPaa]

unresolved external symbol "double __cdecl getAvg(int (* const)[5],int)

That means you do not have a function taking those parameters in your program (usually because your declaration and definition differs).

[Ericool]

did you implement the method in the cpp ?