Json learning notes

Json has the biggest advantage over Xml, based on strings. Xml must be related to files, while json is only a string (of course file-related operations are also provided ). Let & amp; #39; ssayitfrommycode: [cpp] # include & lt; json/json. h & gt; // extract the package and find the object... syntax Json has the biggest advantage over Xml, based on strings. Xml must be related to files, while json is only a string (of course file-related operations are also provided ). Let's say it from my code: [cpp] # include // Decompress the package and find the directory vs71. Use vs to open the package and generate a solution. This program is directly rewritten in jsontest. cpp # include # Include # Include Using namespace std; const string g_file = "json. c "; // originally thought vs would make a format for the json format string after opening the file. The result is the same as opening the file in Notepad. It is better to have a clear xml structure. // the two structures are not used here, their purpose is to let us see the json string format struct Address {string name; // street name int number; // Street number}; struct Student {int no; // learn string name; // name Address addr; // home Address}; void Write () {Json: Value root; // root (like the root of a fruit tree) int no [] = {2008,201 0, 2013}; string name [] = {"sumos", "fly away", "sun" }; String name2 [] = {"Xihu road", "Donghu road", "Zhongnanhai"}; int number [] = {101,202,303}; for (int k = 0; k <3; k ++) {Json: Value person, addr; person ["no"] = Json: Value (no [k]); person ["name"] = Json: Value (name [k]); addr ["name"] = Json: Value (name2 [k]); addr ["number"] = Json: Value (number [k]); person ["address"] = addr; root. append (person);} Json: FastWriter writer; // FastWriter does not have Encode ofstream out; out. Open (g_file); if (out. is_open () {out <writer. write (root); out. close () ;}} void Read () {ifstream in; in. open (g_file); if (! In. is_open () return; Json: Reader reader; Json: Value root; bool r = reader. parse (in, root); if (! R) {in. close (); return;} int n = root. size (); for (int k = 0; k <n; k ++) {Json: Value person = root [k]; cout <person ["no"]. asInt () <person ["name"]. asString () <