C++ :: Segmentation Error When Saving File

I have been working a while with saving and retrieve structs, and I still have not got it to work. I get Segmentation fault sh "${SHFILE} . I have search this error, and it has something to do with memory, but what, since I am a beginner with saving and retrieving files. The project runs fine, and the error stated above outputs into my console window as text.

Here are my two structs:

struct checkbook {
char id[50];
double value[50];
};
struct fbook {

[Code] ....

Here is how I save and retrieve my structs:

void saveCheckbook (string file, checkbook checkbook, double initial, int counter) {
string path = "C:UsersAshwinGoogle DriveC++Checkbook" + file;
fbook save;
save.counter = counter;
save.initial = initial;
save.book = checkbook;

[Code] ...