basic_istream::getline

To obtain a delimiter terminated character sequence from an input stream.

  basic_istream<charT, traits>& getline(char_type* s, 

  streamsize n, char_type delim = traits::newline());  

The unformatted getline() function retrieves character input, and stores it in a character array buffer s if possible until the following conditions evaluated in this order occur. If no characters are extracted setstate(failbit) is called.

end-of-file occurs in which case setstate(eofbit) is called.

A delimiter (default value is the newline character) is encountered. In which case the delimiter is read and extracted but not stored.

A limit (the second argument minus one) is read.

If n-1 chars are read, that failbit gets set.

In any case it stores a null char into the next successive location of the array.

The this pointer is returned.

basic_ostream::flush

#include <iostream>
const int size = 120;

int main()
{
using namespace std;
   char compiler[size];
   cout << "Enter your compiler: ";
   cin.getline(compiler, size);
   cout << "You use " << compiler;
   return 0;
}

Result:

  Enter your compiler:CodeWarrior <enter>
  You use CodeWarrior
  

  #include <iostream>
  const int size = 120;

  #define TAB '\t'

  int main()
  {
  using namespace std;
     cout << "What kind of Compiler do you use: ";
     char compiler[size];
     cin.getline(compiler, size,TAB);
     cout << compiler;
     cout << "\nsecond input not needed\n";
     cin >> compiler;
     cout << compiler;
     return 0;
 }  

Result:

  What kind of Compiler do you use:

  CodeWarrior<tab>Why?

  CodeWarrior

  second input not needed

  Why?