While Compiling this below mentioned code, I faced through an error of General Protection Fault.I want to know where is the error in my code.

#include<iostre am.h>
#include<conio. h>
#include<fstrea m.h>
#include<proces s.h>
typedef float amount;
typedef int choice;
int billing(float,i nt);
class cust{
char name[30],address[200],gen,eid[30];
double mobno;...