What are the functions of these backslashes in this sentence? http.POST("{ "hello ": "world "}");

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// start connection and send HTTP header and body
int httpCode = http.POST("{\"hello\":\"world\"}");
c json

  • I think you should study "what is the function of the backslash?" and escape characters.

  • This answers your question? What exactly is the backslash ( ) for in Python?

  • Specifically about JSON: The delimiter of a string in JSON always is ". As your string already uses " in the code, you need to use \" to escape the string that goes inside the quotes.

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These inverted bars serve to escape the next character, ie it will be understood literally as ", and not as closure of string.

Without these bars, the content within their function would be a string invalid.

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