how to write data to json file c** code example

Example 1: save json to file

import json

data = {}

with open('data.txt', 'w') as outfile:
    json.dump(data, outfile)

Example 2: js writing to json file

var fs = require('fs');

var data = {}
data.table = []
for (i=0; i <26 ; i++){
   var obj = {
       id: i,
       square: i * i
   }
   data.table.push(obj)
}
fs.writeFile ("input.json", JSON.stringify(data), function(err) {
    if (err) throw err;
    console.log('complete');
    }
);