Question

As there several ways to exchange data in the form of strings over sockets, such as:

• using functions like:

  1. sprintf() and sscanf()
  2. snprintf() and sscanf()
  3. printf() and strtof()

• or converting to char and then passing it as an array

I would appreciate if you could suggest which way and why it is efficient and better than others, or if there is another way not mentioned above. At the moment I am using the simplest way, I mean sprintf() and sscanf() functions. But I read on the web that e.g. using snprintf() function is more safe.

Answer 1

in C++ you can also use StringStream

stringstream ss;
 int i = 1;
 float f = "1.0";
 char separtor = ';';

 ss << i << separtor  << f;

you can then extract the string with ss.str().c_str()

ss.str().c_str() will result in the case above with

“

1;1.0

“