#ifdef MY_STR_BUILD_DLL
#define MY_STR_API __declspec(dllexport) //If isBuild, Use EXPORT
#else
#define MY_STR_API __declspec(dllimport) //If is not used for Build, Use IMPORT
#endif

#ifdef __cplusplus
extern "C" {
#endif

//Uses 
MY_STR_API double evaluate(const char* exp);

#ifdef __cplusplus
}
#endif