Problem in File writing

[sanketbarot]

Hi, Friends

When I am trying to make a file which of .txt type. it is not generating it perfactly.

 #include<iostream.h> 
#include<fstream.h>
#include<conio.h>
 
void main()
{
 
clrscr();
 
char *name;
 
fstream test;
test.open("try.txt",ios::binary|ios::out);
cout<<"Enter Name";
cin>>name;
cout<<endl<<name;
 
test.write((char*)name,sizeof(name));
test.close();
 
getch();
 
}
 

this is my program.. The thing is it is creating a .txt file but copy only first two letters. Why?

and how can can I make it perfact?

[gasfusion]

what does the file contain? is there just one name in that file?

[gasfusion]

errr. didn't read it right...let me compile it. it has to do with your name variable i think.

[gasfusion]

first of all, sizeof(ptr) means:

the amount of space the pointer itself takes up. Not the data pointed
to, but the pointer itself. Hence, sizeof is giving the wrong return value, in your case 2 bytes, and writes only 2 characters from your name input to the file.

[sanketbarot]

hey ppl thanks a lot i really appreciate it, it helped a lot guys.