If you have already removed a character (in char variable ch)from the input stream,you can apply a member function of cin to the variable ch to return it to the input stream.Which of these does this task?
A)cin.get(ch);
B)cin.put(ch);
C)cin.peek(ch);
D)cin.putback(ch);

Question

Quizplus · Accepted Answer

The cin.putback(ch) function is used to return the character to the input stream. The cin.get(ch) function reads a character from the input stream, the cin.put(ch) function writes a character to the output stream, and the cin.peek(ch) function reads a character from the input stream without removing it, so they are not the best choice for this task.

If You Have Already Removed a Character (In Char Variable