cin.get & cin.getline doesn't work

[scarnet]

can any1 tell me why all cin.get and cin.getline in this code doesn't work????

#include<iostream>
#include<istream>
#include<fstream>
#include<string>
using namespace std;
 void write()
 {
	 char address[20];
	 char stmt[100];
	 ofstream myfile;
	 cout<<"enter the address of the file you want to read: \n";
	 cin.get (address,20);
	 myfile.open(address);
	 cout<<"enter your statment\n";
	 cin>>skipws;
	 cin.getline (stmt,100);
	 myfile<<stmt;
	 return;
 }
  void modify()
 {
	 char address[20];
	 ofstream myfile;
	 cout<<"enter the address of the file you want to read\n";
	 cin.get(address,20);
	 myfile.open(address,ios::app);
	 myfile<<"writing  again\n";
	 myfile<<"Ragnarok\n";
	 return;
  }
void read()
 {
     string address;
     ifstream myfile;
     cout<<"enter the address of the file you want to read\n";
     getline(cin, address);
     myfile.open (address.c_str(), ios::app);
     const int line_length=100;
     char str[line_length];
     while(myfile.getline(str,line_length))
     {
         cout<<"read from file"<<str<<endl;
     }
     return;
 }
 int main()
 {
	 int x;
	 cout<<"hello user\n";
	 cout<<"press 1 to write\t"<<"press 2 to modify\t"<<"press 3 to read\t\n";
	 cin>>x;
	 cout<<endl;
	 switch(x)
	 {
		 case 1:
			 write();
			 break;
		 case 2:
			 modify();
			 break;
		 case 3:
			 read();
			 break;
		 default:cout<<"wrong choice\n";
			 break;
	 }
 }

[firedraco]

Your problem is line 51: cin>>x;
This leaves junk in the input buffer; you'll have to deal with it somehow or use getline() instead and convert it to a number yourself.