how to declare char * with input of {“data”: “0001”}'

Question

my input data have this format { \"data\": \"0001\" }\'. when I declare as follows, in VC, it showed msg of \"user-defined literal operator not found\". how to declare and initi

Answer 1

From C++11 onwards, you have the option of using raw string literals.

With that you will be able to do this:

const char * u = R"({ "data": "0001" }')";

If you cannot use C++11 features, then go for the old-fashioned way of escaping the double quotes like this:

const char * u = "{ \"data\": \"0001\" }'";