
- The C Standard Library
- The C Standard Library
- The C++ Standard Library
- C++ Library - Home
- C++ Library - <fstream>
- C++ Library - <iomanip>
- C++ Library - <ios>
- C++ Library - <iosfwd>
- C++ Library - <iostream>
- C++ Library - <istream>
- C++ Library - <ostream>
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C++ ios Library - Function Internal
Description
It is used to sets the adjustfield format flag for the str stream to internal. When adjustfield is set to internal, the output is padded to the field width (width) by inserting fill characters (fill) at a specified internal point, which for numerical values is between the sign and/or numerical base and the number magnitude. For non-numerical values it is equivalent to right.
Declaration
Following is the declaration for std::internal function.
ios_base& internal (ios_base& str);
Parameters
str − Stream object whose format flag is affected.
Return Value
It returns Argument str.
Exceptions
Basic guarantee − if an exception is thrown, str is in a valid state.
Data races
It modifies str. Concurrent access to the same stream object may cause data races.
Example
In below example explains about std::internal function.
#include <iostream> int main () { int n = -77; std::cout.width(6); std::cout << std::internal << n << '\n'; std::cout.width(6); std::cout << std::left << n << '\n'; std::cout.width(6); std::cout << std::right << n << '\n'; return 0; }
Let us compile and run the above program, this will produce the following result −
- 77 -77 -77