Thanks guys! i have made my sample code work now. I thought i cannot use '#include' and 'std::...' inside a .h file. So what are the differences of .h and .cpp?
--- In [email protected], Thomas Hruska <thru...@...> wrote: > > Brett McCoy wrote: > > On Wed, May 6, 2009 at 12:07 PM, mark <anthonymor...@...> wrote: > >> Mark.h > >> > >> #pragma once //i am using visual c++ 2008 compiler/ide, this is > >> equvilaent to #ifndef mark_h... etc... > >> #include <string> //is this part needed here? > >> class MyClass > >> { > >> public: > >> int id; > >> MyClass(int); > >> > >> ~MyClass(){} > >> > >> string func() // i want this function to return the string below, > >> but it doesnt > >> { > >> return "6767"; > >> } > > > > > > string func() > > { > > string newString = "6767"; > > return newString; > > } > > > > Be careful, of course, returning references to local variables (in > > this case, we are returning a copy of the local variable). > > > > -- Brett > > ------------------------------------------------------------ > > "In the rhythm of music a secret is hidden; > > If I were to divulge it, it would overturn the world." > > -- Jelaleddin Rumi > > > > > > ------------------------------------ > > Or, more succinctly: > > std::string func() > { > return std::string("6767"); > } > > Instead of initializing, assigning, and then returning a copy. More > opportunity for the compiler to optimize and inline the function. > > -- > Thomas Hruska > CubicleSoft President > Ph: 517-803-4197 > > *NEW* MyTaskFocus 1.1 > Get on task. Stay on task. > > http://www.CubicleSoft.com/MyTaskFocus/ >
