stdnoskipws

std::noskipws is a manipulator in the C++ standard library that disables the default behavior of skipping leading whitespace on input streams during formatted input. When applied to an input stream, it clears the ios_base::skipws flag, causing subsequent extractions with operator>> to read whitespace characters as part of the input rather than ignoring them. The flag remains in effect for the stream until it is changed back, for example by applying std::skipws or by resetting the stream’s state.

Usage examples: You apply it to the stream like std::cin >> std::noskipws;. After that, reading a char will fetch the next character, including spaces and newlines, e.g., char c; while (std::cin >> c) { /* process c */ }. It is useful when you need to process input at the granularity of individual characters or when parsing input where whitespace is significant (such as certain textual formats or binary-like data represented in text).

Implementation notes: noskipws is defined in the standard library for input streams, typically declared in headers such as <iostream>, <istream>, or <iomanip> and is part of the std namespace. It is the counterpart to std::skipws, which enables skipping of whitespace.