What is the difference between cin.get(ch) and ch=cin.get()?

[Mahesh Baria]

What is diffrence between cin.get(ch) and ch=cin.get()?He re ch is a char variable.

[Savage]

Difference is that cin.get(ch) returns an istream object, while cin.get() returns the read character as an integer.

First version allows you to more easily read the stream in a loop because it returns an istream object which got boolean conversion so you can do the following(e.g):

char c;
while(cin.get(c))
{
   //do something
}

, instead of having to do:

char c;
while(cin.fail()==false)
{
   c = cin.get();
   //do something
}

[tdlr]

There's a small typo in line 2 of your code, Savage. It should be:

while(cin.get(c))