main.cpp

#include <iostream>
#include "json.h"

using namespace std;

int main() {
    Json::Number num(3.14159265358972);
    Json::String s("5.\" ' \1 0");
    Json::Boolean t(true);
    Json::Boolean f(false);
    Json::Array a = {{&s, &t, &f, &num}};
    Json::Object o  = {{{"num", &num}, {"t", &t}, {"a", &a}}};
    cout << num << endl << s << endl << endl;
    cout << Json::null << " " << t << " " << f << endl;
    cout << "a: " << a << endl;
    cout << "o: " << o << endl;

    return 0;
}

out.txt

3.14159
"5.\" ' \u0x7fff064b1828 0"

null true false
a: [
	"5.\" ' \u0x7fff064b17a8 0",
	true,
	false,
	3.14159
]
o: {
	"a":[
		"5.\" ' \u0x7fff064b1708 0",
		true,
		false,
		3.14159
	],
	"num":3.14159,
	"t":true
}