std::basic_streambuf<CharT,Traits>:: sgetc

From cppreference.com
C++
Input/output library
std::basic_streambuf
int_type sgetc ( ) ;

Reads one character from the input sequence.

If the input sequence read position is not available, returns underflow() . Otherwise returns Traits :: to_int_type ( * gptr ( ) ) .

Parameters

(none)

Return value

The value of the character pointed to by the get pointer .

Example

Run this code 
#include <iostream>
#include <sstream>
 
int main()
{
    std::stringstream stream("Hello, world");
    std::cout << "sgetc() returned '" << (char)stream.rdbuf()->sgetc() << "'\n";
    std::cout << "peek() returned '" << (char)stream.peek() << "'\n";
    std::cout << "get() returned '" << (char)stream.get() << "'\n";
}

Output: 

sgetc() returned 'H'
peek() returned 'H'
get() returned 'H'

See also

(removed in C++17)
reads one character from the input sequence and advances the sequence
(public member function)
advances the input sequence, then reads one character without advancing again
(public member function)
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