#include#include int main() { std::ifstream file("example.txt"); if(file.good()) { char* buffer = new char[256]; file.read(buffer, 256); std::cout << "Read " << file.gcount() << " characters." << std::endl; char* released = file.rdbuf()->pubsetbuf(nullptr, 0)->release(); if(buffer == released) { std::cout << "Buffers match." << std::endl; } else { std::cout << "Buffers do not match." << std::endl; } } else { std::cerr << "Failed to open file." << std::endl; } return 0; }
#includeThis example demonstrates how to use the release() method to release the input sequence associated with an istringstream object and obtain a pointer to the current buffer. In this example, the string "Hello, world!" is read into a buffer of size 256, and the release() method is called to obtain a pointer to the current buffer. The pointer is then compared to the original buffer to verify that they match. Package/Library: Standard C++ Library#include int main() { std::istringstream stream("Hello, world!"); char* buffer = new char[256]; stream.read(buffer, 6); std::cout << "Read " << stream.gcount() << " characters." << std::endl; char* released = stream.rdbuf()->pubsetbuf(nullptr, 0)->release(); if(buffer == released) { std::cout << "Buffers match." << std::endl; } else { std::cout << "Buffers do not match." << std::endl; } return 0; }