\nfstream is fast and is good for combining large files together without needing to read in each file.\n<\/p>\n
\r\n\r\n#include <fstream>\r\n\tstd::ifstream ifstream1("a.bin", std::ios_base::binary);\r\n\tstd::ifstream ifstream2("b.bin", std::ios_base::binary);\r\n\tstd::ofstream ofstream1("c.bin", std::ios_base::binary);\r\n\r\n\tofstream1 << ifstream1.rdbuf() << ifstream2.rdbuf();\r\n<\/code><\/pre>\n\nAdding some bytes to the output file:\n<\/p>\n
\r\n\r\n\tBYTE MyByteArray[3];\r\n\tMyByteArray[0] = 0x01;\r\n\tMyByteArray[0] = 0x02;\r\n\tMyByteArray[0] = 0x03;\r\n\tofstream1.write((const char*)&MyByteArray[0], 3);\r\n\tofstream1.close();\r\n<\/code><\/pre>\n\nCreate a new text file from an existing text file and a string
\n<\/h4>\n\r\n\r\n#include <fstream>\r\n\tstd::ifstream ifstream1("some_existing_file.txt", std::ios_base::in);\r\n\tstd::ofstream output_file("my_new_file.txt");\t\t\t\t\/\/Will overwrite an existing file\r\n\r\n\toutput_file << ifstream1.rdbuf();\r\n\toutput_file << "My text to add";\r\n\toutput_file.close();\t\t\t\/\/(Not strictly necessary as it will get closed when output_file goes out of scope)\r\n<\/code><\/pre>\n\n <\/p>\n","protected":false},"excerpt":{"rendered":"
Combine Files fstream is fast and is good for combining large files together without needing to read in each file. Combine 2 files (can be any file type): #include <fstream> std::ifstream ifstream1("a.bin", std::ios_base::binary); std::ifstream ifstream2("b.bin", std::ios_base::binary); std::ofstream ofstream1("c.bin", std::ios_base::binary); ofstream1 << ifstream1.rdbuf() << ifstream2.rdbuf(); Adding some bytes to the output file: BYTE MyByteArray[3]; MyByteArray[0] = 0x01; MyByteArray[0] = […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[135,141],"tags":[],"class_list":["post-2689","post","type-post","status-publish","format-standard","hentry","category-file-operations","category-stringstream"],"_links":{"self":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts\/2689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/comments?post=2689"}],"version-history":[{"count":6,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts\/2689\/revisions"}],"predecessor-version":[{"id":2869,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts\/2689\/revisions\/2869"}],"wp:attachment":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/media?parent=2689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/categories?post=2689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/tags?post=2689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}