cprintf

cprintf supported this env

* nodejs
* broswer
* webchat app

install via npm
``javascript
npm install cprintf --save
`

this lib include two functions

`javascript
string sprintf(strFormat , ...);
`

`javascript
void printf(strFormat , ...);
`


usage


`javascript
// import function
const sprintf = require('cprintf').sprintf;
const printf = require('cprintf').printf;

// c-like printf
printf('hellp prinf %d\n' , 1 );

// c-like sprintf
var strText = sprintf('hellp prinf %d\n' , 1 );
printf( strText );
console.log( strText );

// direct printf a JSON object
var xxObj = {a : 1 , b : 2};
printf( "%s" , xxObj);
``

support formats just like c printf and sprintf
* %c -- ascii value
* %d -- signed number
* %s -- string
* %x -- number in hex
* %i -- signed number
* %f -- float
* %o -- octal number
* %u -- unsigned number